Undermind Research Topic: I want to find papers about laser cooling an ensemble of ultra cold atoms to quantum degeneracy or BEC. Have people accomplished this? Why do people want to do laser cooling instead of using evaporative cooling to reach BEC?

Research topic

I want to find papers about laser cooling an ensemble of ultra cold atoms to quantum degeneracy or BEC. Have people accomplished this? Why do people want to do laser cooling instead of using evaporative cooling to reach BEC?

Report

Laser cooling has been successfully used to achieve quantum degeneracy and Bose-Einstein Condensation (BEC) in various atomic species, as demonstrated in multiple studies [1, 2, 3, 4, 5], with significant advantages over evaporative cooling including higher atom numbers, faster cooling times, and minimal atom loss.

Details:

Direct Achievements of BEC Through Laser Cooling:
- Strontium: Stellmer et al. (2013) demonstrated BEC in strontium atoms using continuous Doppler cooling on a narrow-linewidth transition, achieving condensates of up to 10^5 atoms [1].
- Rubidium-87: Urvoy et al. (2019) presented a method to produce BEC of ^87Rb atoms using Raman cooling in a dipole trap, achieving condensation with 2.5×10^4 atoms at 0.6 μK [2]. Similarly, Hu et al. (2017) achieved BEC with ^87Rb atoms using a 2D optical lattice and Raman sideband cooling [4].
- Machine Learning Optimization: Xu et al. (2023) utilized polarization gradient cooling along with machine learning to optimize parameters, forming a small BEC of ~250 ^87Rb atoms in 40 ms [3]. Vendeiro et al. (2022) also applied machine learning to expedite the BEC formation process by optimizing Raman cooling parameters [21].
Sub-Recoil and Advanced Cooling Techniques:
- Narrow-Line Cooling: Several studies, such as Katori et al. (2000) [11] and Bennetts et al. (2017) [9], have discussed the use of narrow intercombination lines and efficient cooling schemes that approach, but may not directly reach, the quantum degeneracy regime.
- Gray Molasses and Raman Sideband Cooling: Fernandes et al. (2012) and Duarte et al. (2011) have demonstrated advanced sub-Doppler cooling techniques such as gray molasses and Raman sideband cooling, significantly lowering temperatures to enable efficient evaporative cooling for quantum degeneracy [8, 13, 29].
Motivation for Laser Cooling Over Evaporative Cooling:
- Higher Atom Numbers: Laser cooling does not inherently result in atom loss, maintaining higher atom numbers crucial for certain experiments, irreplaceable species, or where atom losses are problematic [14].
- Speed and Efficiency: Laser cooling techniques achieve ultra-cold temperatures much faster than evaporative cooling, minimizing overall experimental cycle times [2, 5].
- Control and Specificity: Laser cooling allows for fine-tuning the cooling process to address specific internal states and manipulate specific atomic populations, leading to highly controlled cooling cycles [19].

Conclusion:

Research confirms that laser cooling can achieve quantum degeneracy and BEC in atomic systems, offering numerous benefits over traditional evaporative cooling methods, including higher initial atom counts, speed, and control. Significant advancements in techniques and the application of machine learning have facilitated these achievements, marking a notable shift in cooling methodologies for reaching ultra-cold quantum states.

References

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> 5 citations per year

Topic Match

Cit./Year

Year

Paper

Paper Relevance Summary

100.0%

11.5

2013

[1] Laser cooling to quantum degeneracy. S. Stellmer, ..., and F. Schreck Physical review letters 2013 - 134 citations - Show abstract - Cite - PDF 100.0% topic match

Provides evidence of reaching BEC using laser cooling alone. Demonstrates BEC in strontium atoms through continuous Doppler cooling on a narrow-linewidth transition below 1 μK. Achieves condensates of up to 10^5 atoms, highlighting practical and repeated application within 100 ms.

Provides evidence of reaching BEC using laser cooling alone. Demonstrates BEC in strontium atoms through continuous Doppler cooling on a narrow-linewidth transition below 1 μK. Achieves condensates of up to 10^5 atoms, highlighting practical and repeated application within 100 ms.

99.9%

8.0

2019

[2] Direct Laser Cooling to Bose-Einstein Condensation in a Dipole Trap. A. Urvoy, ..., and V. Vuletić Physical review letters 2019 - 44 citations - Show abstract - Cite - PDF 99.9% topic match

Shows direct laser cooling to BEC in ^{87}Rb atoms. Uses Raman cooling in a dipole trap to cross BEC phase transition with 2.5×10^{4} atoms at T_{c}=0.6 μK. Highlights importance of tuning trap depth and optical-pumping rate to avoid heating and loss mechanisms.

Shows direct laser cooling to BEC in ^{87}Rb atoms. Uses Raman cooling in a dipole trap to cross BEC phase transition with 2.5×10^{4} atoms at T_{c}=0.6 μK. Highlights importance of tuning trap depth and optical-pumping rate to avoid heating and loss mechanisms.

99.9%

0.0

2023

[3] Bose-Einstein Condensation by Polarization Gradient Laser Cooling. Wenchao Xu, ..., and Vladan Vuleti'c Physical review letters 2023 - 0 citations - Show abstract - Cite - PDF 99.9% topic match

Shows PGC can achieve BEC without evaporative cooling. Reports creation of small BEC of ∼250 Rb atoms using polarization gradient cooling in 40 ms. Utilizes machine learning to optimize experimental parameters, significantly increasing atom number and phase space density.

Shows PGC can achieve BEC without evaporative cooling. Reports creation of small BEC of ∼250 Rb atoms using polarization gradient cooling in 40 ms. Utilizes machine learning to optimize experimental parameters, significantly increasing atom number and phase space density.

99.9%

11.9

2017

[4] Creation of a Bose-condensed gas of 87Rb by laser cooling Jiazhong Hu, ..., and V. Vuletić Science 2017 - 87 citations - Show abstract - Cite - PDF 99.9% topic match

Demonstrates creation of BEC using laser cooling. Uses 2D optical lattice and Raman sideband cooling to achieve quantum degeneracy with 87Rb in 300 ms. Effective for various species, suitable where evaporative cooling is unfeasible.

Demonstrates creation of BEC using laser cooling. Uses 2D optical lattice and Raman sideband cooling to achieve quantum degeneracy with 87Rb in 300 ms. Effective for various species, suitable where evaporative cooling is unfeasible.

99.8%

3.8

2017

[5] Creation of a Bose-condensed gas of rubidium 87 by laser cooling Jiazhong Hu, ..., and V. Vuletić Journal Not Provided 2017 - 29 citations - Show abstract - Cite 99.8% topic match

Shows laser cooling to quantum degeneracy without evaporative cooling. Uses 2D optical lattice and Raman sideband cooling to achieve BEC. Demonstrates minimal atom loss and rapid cooling, applicable to different atomic species.

Shows laser cooling to quantum degeneracy without evaporative cooling. Uses 2D optical lattice and Raman sideband cooling to achieve BEC. Demonstrates minimal atom loss and rapid cooling, applicable to different atomic species.

99.8%

0.5

2020

[6] An ultracold Bose-Einstein condensate in steady state. Chun-Chia Chen, ..., and F. Schreck arXiv: Quantum Gases 2020 - 2 citations - Show abstract - Cite 99.8% topic match

Shows creation of a steady-state BEC of $^{84}\mathrm{Sr}$ using laser cooling. Guides a continuous stream of $^{84}\mathrm{Sr}$ through spatially separated laser cooling stages to maintain BEC. Emphasizes overcoming atom loss, with potential applications in quantum simulation and continuous-wave atom lasers.

Shows creation of a steady-state BEC of $^{84}\mathrm{Sr}$ using laser cooling. Guides a continuous stream of $^{84}\mathrm{Sr}$ through spatially separated laser cooling stages to maintain BEC. Emphasizes overcoming atom loss, with potential applications in quantum simulation and continuous-wave atom lasers.

98.3%

0.3

2001

[7] Laser cooling of strontium atoms toward quantum degeneracy H. Katori, ..., and M. Kuwata-Gonokami https://doi.org/10.1063/1.1354362 2001 - 8 citations - Show abstract - Cite 98.3% topic match

Shows laser cooling of Sr atoms near quantum degeneracy. Utilizes narrow-line MOT and optical dipole trap for cooling to 400 nK. Phase space density reached 10% of that needed for quantum degeneracy; limited by light-assisted collisions.

Shows laser cooling of Sr atoms near quantum degeneracy. Utilizes narrow-line MOT and optical dipole trap for cooling to 400 nK. Phase space density reached 10% of that needed for quantum degeneracy; limited by light-assisted collisions.

90.8%

0.0

2012

[8] epl draft Sub-Doppler laser cooling of fermionic 40 K atoms in three-dimensional gray optical molasses D. R. Fernandes, ..., and F. Chevy Journal Not Provided 2012 - 0 citations - Show abstract - Cite Abstract: We demonstrate sub-Doppler cooling of K on the D1 atomic transition. Using a gray molasses scheme, we efficiently cool a compressed cloud of 6.5 × 10 atoms from ∼ 4 mK to 20μK in 8 ms. After transfer in a quadrupole magnetic trap, we measure a phase space density of ∼ 10−5. This technique offers a promising route for fast evaporation of fermionic K. Introduction. – Cooling of fermionic atomic species has played a fundamental role in the study of strongly correlated Fermi gases, notably through the experimental exploration of the BCS-BEC crossover, the observation of the Clogston-Chandrasekhar limit to superfluidity, the observation of the Mott-insulator transition in optical lattices, and the study of low dimensional systems (see for instance [1,2] for a review). When the temperature is further decreased, new exotic phases are predicted (p-wave superfluids for spin imbalanced gases, antiferromagnetic order..) and, as a consequence, intense experimental effort is currently under way to push the temperature limit achieved in ultracold fermionic samples in order to enter these novel regimes. Most experiments on quantum degenerate gases begin with a laser cooling phase that is followed by evaporative cooling in a non-dissipative trap. The final quantum degeneracy strongly depends on the collision rate at the end of the laser cooling phase and sub-Doppler cooling [3] is often a key ingredient for initiating efficient evaporation. In the case of fermionic lithium-6 and potassium-40, the narrow hyperfine structure of the P3/2 excited level does not allow for efficient Sisyphus sub-Doppler cooling to the red of a F → F ′ = F + 1 atomic transition [4, 5]. Experiments for producing quantum degenerate gases of K typically start with ∼ 10 atoms laser-cooled to the Doppler limit (145μK) [6]. More refined laser-cooling (a)These authors contributed equally to this work. (b)Email: diogo.fernandes@lkb.ens.fr (c)Email: franz.sievers@lkb.ens.fr schemes have produced K temperatures of ∼ 15μK, but with only reduced atom numbers (∼ 10) [5, 7, 8]. This relatively poor efficiency is due to the combination of the fairly narrow and inverted hyperfine level structure of the P3/2 excited state which results in the washing out of the capture velocity of the molasses when the laser detuning is increased [9]. To overcome these limitations, two groups recently realized Magneto-Optical Traps (MOT) in the near-UV and blue regions of the spectrum to cool Li [10] and K [11] respectively. The associated transitions, being narrower than their D2 counterparts, lead to a smaller Doppler temperature and were used to improve the final phase space density typically by one order of magnitude. In this Letter, we report efficient sub-Doppler cooling of K atoms using gray molasses on the D1 atomic transition at 770 nm. Thanks to the much reduced fluorescence rate compared to standard bright sub-Doppler molasses, we could produce cold and dense atomic samples. The temperature of a tightly compressed cloud of 6.5 × 10 atoms was decreased from ∼ 4 mK to 20μK in 8 ms without significant change of the density in the process. After transfer to a quadrupole magnetic trap, we achieved a phase space density of ∼ 2× 10−5. Gray molasses. – Sub-Doppler cooling using gray molasses was proposed in ref. [12] and realized in the mid ’90s on the D2 atomic transition of cesium and rubidium, allowing one to cool atomic samples close to 6 times the single photon recoil energy [13–15]. For an atomic ground state with angular momentum F , gray molasses operate p-1 ha l-0 07 38 26 0, v er si on 1 3 O ct 2 01 2 D. Rio Fernandes et al. 90.8% topic match

Shows sub-Doppler laser cooling in 3D gray molasses for 40K atoms. Emphasizes achieving temperatures lower than the Doppler limit for fermions, enhancing efficiency for subsequent evaporative cooling. Does not directly achieve quantum degeneracy/BEC but improves initial conditions for evaporation phase.

Shows sub-Doppler laser cooling in 3D gray molasses for 40K atoms. Emphasizes achieving temperatures lower than the Doppler limit for fermions, enhancing efficiency for subsequent evaporative cooling. Does not directly achieve quantum degeneracy/BEC but improves initial conditions for evaporation phase.

88.6%

0.7

2017

[9] Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density. S. Bennetts, ..., and Florian Schreck Physical review letters 2017 - 5 citations - Show abstract - Cite - PDF 88.6% topic match

Shows significant advancement in laser cooling techniques. Demonstrates a steady-state MOT with a 100-fold improved phase-space density. Includes creating Bose-Einstein condensate (BEC) despite laser cooling light's presence.

Shows significant advancement in laser cooling techniques. Demonstrates a steady-state MOT with a 100-fold improved phase-space density. Includes creating Bose-Einstein condensate (BEC) despite laser cooling light's presence.

85.8%

0.0

2019

[10] Towards a Steady-state Atom Laser Chun-Chia Chen, ..., and F. Schreck Bulletin of the American Physical Society 2019 - 0 citations - Show abstract - Cite 85.8% topic match

Shows advancements in cooling Sr atoms near quantum degeneracy. Utilizes broad and narrow linewidth transitions with specific laser cooling architecture to achieve higher phase-space densities. Mentions the goal of approaching steady-state quantum degeneracy using advanced laser cooling techniques. Potentially relevant for laser cooling to BEC.

Shows advancements in cooling Sr atoms near quantum degeneracy. Utilizes broad and narrow linewidth transitions with specific laser cooling architecture to achieve higher phase-space densities. Mentions the goal of approaching steady-state quantum degeneracy using advanced laser cooling techniques. Potentially relevant for laser cooling to BEC.

85.0%

0.1

2000

[11] Laser cooling of strontium atoms towards the quantum degenerate regime H. Katori, ..., and M. Kuwata-Gonokami Conference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504) 2000 - 3 citations - Show abstract - Cite 85.0% topic match

Shows progress towards all-optical quantum degenerate regime. Employs narrow-line laser cooling on strontium atoms to achieve sub-recoil temperatures (~400 nK). Highlights use of two transitions with different dipole moments in a MOT.

Shows progress towards all-optical quantum degenerate regime. Employs narrow-line laser cooling on strontium atoms to achieve sub-recoil temperatures (~400 nK). Highlights use of two transitions with different dipole moments in a MOT.

84.4%

0.1

2016

[12] Simulating the dynamics of harmonically trapped Weyl particles with cold atoms L. Daniel Journal Not Provided 2016 - 1 citations - Show abstract - Cite 84.4% topic match

Shows direct laser cooling leading to quantum degeneracy. Uses grey molasses cooling to achieve a high phase space density. Demonstrates quantum degenerate gas of 40K in a dipole trap at 62 nK.

Shows direct laser cooling leading to quantum degeneracy. Uses grey molasses cooling to achieve a high phase space density. Demonstrates quantum degenerate gas of 40K in a dipole trap at 62 nK.

77.1%

0.4

2014

[13] Trapping and cooling of fermionic alkali atoms to quantum degeneracy. Sub-Doppler cooling of Potassium-40 and Lithium-6 in gray molasses D. R. Fernandes Journal Not Provided 2014 - 4 citations - Show abstract - Cite 77.1% topic match

Demonstrates sub-Doppler cooling of alkali atoms $^{6}$Li and $^{40}$K. Uses gray molasses cooling on the D$_{1}$ transition, achieving high phase space density. Enhances phase space density but does not directly achieve BEC; focuses on devices for transporting magnetically trapped clouds.

Demonstrates sub-Doppler cooling of alkali atoms $^{6}$Li and $^{40}$K. Uses gray molasses cooling on the D$_{1}$ transition, achieving high phase space density. Enhances phase space density but does not directly achieve BEC; focuses on devices for transporting magnetically trapped clouds.

76.9%

0.0

2022

[14] 00 10 06 7 v 3 2 0 M ar 2 00 3 Laser Cooling of Trapped Fermi Gases deeply below the Fermi Temperature Z. Idziaszek, ..., and M. Lewenstein Journal Not Provided 2022 - 0 citations - Show abstract - Cite Abstract: The realization of atomic Bose-Einstein condensation (BEC) [1] and degenerated Fermi gases [2–4], are among the most remarkable recent achievements of the Atomic and Condensed-Matter Physics. In the context of these experiments it has been recently proposed [5] that a wellknown effect in superconductivity (see e.g. [6]), the BCS transition, could be observable in atomic Fermi gases. The experimental observation of such effect remains, however, as an open challenge. The BCS transition requires temperatures well below the Fermi temperature (TF ) and, unfortunately, present techniques, based on evaporative cooling in a Fermi gas with two constituents, have not yet been able to reach the required low temperatures. This is due to the Pauli blocking of the atom-atom collisions, which prolongs the cooling into time scales at which technical losses become dominant [7]. Alternative cooling mechanisms [8,9] combined with the external modification of the scattering length [10], have been proposed as possible mechanisms to achieve BCS. The aim of this Letter is to show that laser cooling offers a realistic and effective method to cool fermionic samples well below TF . Evaporative cooling [2] involves the loss of a large fraction of the initial atoms, which in addition lowers TF . On the contrary, laser cooling introduces in principle no atom losses, and therefore allows to cool larger fermionic samples, without significantly lowering TF during the process. In addition, laser cooling allows to cool polarized single–component Fermi gases, in which the atom–atom collisions are almost absent. Once such a polarized gas was sufficiently cooled, an interaction (for instance dipole-dipole one [11]) could be externally induced, which can also lead to BCS transition [12]. Laser cooling of trapped bosons towards BEC have been predicted to work in the Festina Lente (FL) regime [13,14], in which the spontaneous emission γ is smaller than the trap frequency ω. Experimental confirmation of this possibility has been recently reported in Ref. [15]. For fermions, apart from standard problems (reabsorptions), laser cooling is obstacled by the inhibition of spontaneous emission [16]. Such inhibition, combined with the already slow spontaneous emission rate in the FL regime, would lead to unacceptably long cooling times. This Letter shows that both, reabsorption problem and inhibition of the spontaneous emission, can be overcome in the Raman cooling of trapped Fermi gases. This is done first by adjusting the spontaneous Raman rate, and second by employing the anharmonicity of the trap. We consider N fermions with an accessible electronic three–level Λ scheme, with levels |g〉, |e〉 and |r〉. We assume that the ground state |g〉 is coupled via a Raman transition to |e〉 (which is assumed metastable). Another laser couples |e〉 to the upper state |r〉, which rapidly decays into |g〉. After the adiabatic elimination of |r〉, a two–level system is obtained, with an effective Rabi frequency Ω, and an effective spontaneous emission rate γ. The latter can be controlled by modifying the coupling from |e〉 to |r〉. The atoms are confined in a non-isotropic dipole trap with frequencies ω x,y,z, ω e x,y,z, different for the |g〉 and |e〉 states, and non-commensurable one with another. The latter assumption simplifies enormously the dynamics of the spontaneous emission processes in the FL limit. The cooling process consists of sequences of Raman pulses of appropriate frequencies, similar to those of Refs. [14]. We assume weak excitation, so that no significant population in |e〉 is present. This allows to adiabatically eliminate |e〉, and consequently to consider only the density matrix ρ(t) describing all atoms in |g〉, and being diagonal in the Fock representation corresponding to the bare trap levels. In principle, an inherent heating is introduced by the reabsorption of the spontaneously scattered photons. Fortunately, it has been shown that such heating is largely reduced in the FL regime [13]. Due to the Pauli blocking of the s-wave scattering, the elastic collisions can be considered as absent, as well as the collisional twobody and three-body losses. Therefore, the main sources of losses are background collisions and photoassociation. For the considered laser intensities and atomic densities both loss mechanisms are negligible [17], in comparison to the losses introduced by the removal of excited–state atoms discussed below. In this Letter we use the notation of Refs. [14]. Using the standard theory of quantum stochastic processes one can derive the quantum master equation which describes the atom dynamics in the FL regime. One can then adiabatically eliminate the excited state, to obtain 76.9% topic match

Shows how laser cooling cools Fermi gases below the Fermi temperature. Details the advantages of laser cooling over evaporative cooling, emphasizing no atom loss and maintaining larger samples. Mentions laser cooling towards BEC in the Festina Lente regime, with recent experimental confirmation referenced.

Shows how laser cooling cools Fermi gases below the Fermi temperature. Details the advantages of laser cooling over evaporative cooling, emphasizing no atom loss and maintaining larger samples. Mentions laser cooling towards BEC in the Festina Lente regime, with recent experimental confirmation referenced.

73.3%

2.0

2009

[15] Bose-Einstein Condensation of 84-Sr Y. M. D. Escobar, ..., and T. Killian arXiv: Quantum Gases 2009 - 30 citations - Show abstract - Cite - PDF 73.3% topic match

Provides experimental evidence of Bose-Einstein Condensation (BEC) of 84-Sr. Shows that BEC was achieved using efficient laser cooling on a narrow intercombination line and an optimal s-wave scattering length. Does not mention if laser cooling alone was used to reach BEC, suggesting possible use of evaporative cooling after initial laser cooling.

Provides experimental evidence of Bose-Einstein Condensation (BEC) of 84-Sr. Shows that BEC was achieved using efficient laser cooling on a narrow intercombination line and an optimal s-wave scattering length. Does not mention if laser cooling alone was used to reach BEC, suggesting possible use of evaporative cooling after initial laser cooling.

73.0%

5.2

2011

[16] Degenerate quantum gases of strontium S. Stellmer, ..., and T. Killian arXiv: Quantum Gases 2011 - 69 citations - Show abstract - Cite - PDF 73.0% topic match

Provides an overview of laser cooling and evaporation to achieve quantum degeneracy in strontium. Details methods for creating Bose-Einstein condensates and degenerate Fermi gases of strontium isotopes using these cooling techniques. Relevant for its focus on laser cooling schemes but relies on evaporation for reaching BEC, making it indirectly relevant.

Provides an overview of laser cooling and evaporation to achieve quantum degeneracy in strontium. Details methods for creating Bose-Einstein condensates and degenerate Fermi gases of strontium isotopes using these cooling techniques. Relevant for its focus on laser cooling schemes but relies on evaporation for reaching BEC, making it indirectly relevant.

70.5%

0.0

2021

[17] The gray molasses cooling technique for optimizing the temperature of 39K atoms Edward Gutenberg Iraita Salcedo https://doi.org/10.11606/d.76.2021.tde-05102021-150926 2021 - 0 citations - Show abstract - Cite 70.5% topic match

Demonstrates advanced cooling of 39K atoms using gray molasses. Achieves sub-Doppler temperatures (~14.3μK) essential for quantum degeneracy steps. Does not confirm reaching BEC but shows significant progress in sub-Doppler cooling.

Demonstrates advanced cooling of 39K atoms using gray molasses. Achieves sub-Doppler temperatures (~14.3μK) essential for quantum degeneracy steps. Does not confirm reaching BEC but shows significant progress in sub-Doppler cooling.

61.6%

11.7

1999

[18] Magneto-Optical Trapping and Cooling of Strontium Atoms down to the Photon Recoil Temperature H. Katori, ..., and M. Kuwata-Gonokami Physical Review Letters 1999 - 300 citations - Show abstract - Cite 61.6% topic match

Shows cooling and trapping of strontium atoms down to photon recoil temperature. Uses narrow-line laser cooling in a magneto-optical trap (MOT) with a minimum temperature of 400 nK. Achieves high phase space density, providing a system to study quantum statistical properties.

Shows cooling and trapping of strontium atoms down to photon recoil temperature. Uses narrow-line laser cooling in a magneto-optical trap (MOT) with a minimum temperature of 400 nK. Achieves high phase space density, providing a system to study quantum statistical properties.

57.9%

6.1

2012

[19] Cavity Cooling Below the Recoil Limit M. Wolke, ..., and A. Hemmerich Science 2012 - 74 citations - Show abstract - Cite 57.9% topic match

Presents a cavity cooling method below the recoil limit. Applies to Bose-Einstein condensates (BECs) of Rb atoms using atom-cavity interactions. Method could extend to hotter samples with specific laser pulse sequences.

Presents a cavity cooling method below the recoil limit. Applies to Bose-Einstein condensates (BECs) of Rb atoms using atom-cavity interactions. Method could extend to hotter samples with specific laser pulse sequences.

48.7%

4.2

1999

[20] Optimal Design of Dipole Potentials for E-cient Loading of Sr Atoms H. Katori, ..., and M. Kuwata-Gonokami https://doi.org/10.1143/JPSJ.68.2479 1999 - 105 citations - Show abstract - Cite 48.7% topic match

Demonstrates a novel optical dipole trap (FORT) compatible with Doppler cooling. Efficiently loads Sr atoms into FORT using simultaneous Doppler cooling and dipole trapping. Potential step towards achieving quantum-degenerate Sr atoms by purely optical means.

Demonstrates a novel optical dipole trap (FORT) compatible with Doppler cooling. Efficiently loads Sr atoms into FORT using simultaneous Doppler cooling and dipole trapping. Potential step towards achieving quantum-degenerate Sr atoms by purely optical means.

46.3%

4.8

2022

[21] Machine-learning-accelerated Bose-Einstein condensation Z. Vendeiro, ..., and Vladan Vuleti'c Physical Review Research 2022 - 11 citations - Show abstract - Cite - PDF 46.3% topic match

Demonstrates machine-learning-accelerated BEC production using Raman cooling. Optimizes 55 parameters to produce $^{87}\mathrm{Rb}$ BEC in 575 ms. Includes a brief final evaporative cooling step post-Raman cooling; not purely laser cooling to BEC.

Demonstrates machine-learning-accelerated BEC production using Raman cooling. Optimizes 55 parameters to produce $^{87}\mathrm{Rb}$ BEC in 575 ms. Includes a brief final evaporative cooling step post-Raman cooling; not purely laser cooling to BEC.

44.2%

0.3

2018

[22] Sub-Doppler laser cooling of $^{39}$K via the 4S$\to$5P transition G. Unnikrishnan, ..., and H. Nagerl SciPost Physics 2018 - 2 citations - Show abstract - Cite - PDF 44.2% topic match

Demonstrates sub-Doppler cooling of $^{39}$K using Raman sideband cooling. Details the use of the 4S$_{1/2} \to$ 5P transition for achieving lower temperatures in $^{39}$K atoms. Relevant for advancements in sub-recoil cooling techniques, but does not directly mention achieving BEC or quantum degeneracy.

Demonstrates sub-Doppler cooling of $^{39}$K using Raman sideband cooling. Details the use of the 4S$_{1/2} \to$ 5P transition for achieving lower temperatures in $^{39}$K atoms. Relevant for advancements in sub-recoil cooling techniques, but does not directly mention achieving BEC or quantum degeneracy.

43.9%

0.0

2015

[23] Progress Towards a Spinor Bose-Einstein Condensate Machine Nathan Holman Journal Not Provided 2015 - 0 citations - Show abstract - Cite 43.9% topic match

Describes a laser cooling system for studying spinor physics in 41K BEC. Discusses components like ECDL, tapered amplifier, and magnetic field fluctuation-cancelling device. Focuses on system construction rather than demonstrating laser cooling directly achieving BEC. Only somewhat related.

Describes a laser cooling system for studying spinor physics in 41K BEC. Discusses components like ECDL, tapered amplifier, and magnetic field fluctuation-cancelling device. Focuses on system construction rather than demonstrating laser cooling directly achieving BEC. Only somewhat related.

40.9%

2.5

2016

[24] Sub-Doppler laser cooling of 40K with Raman gray molasses on the D 2 line G. Bruce, ..., and S. Kuhr Journal of Physics B: Atomic, Molecular and Optical Physics 2016 - 19 citations - Show abstract - Cite - PDF 40.9% topic match

Shows sub-Doppler cooling of 40K using Raman gray molasses. Achieves 48 μK temperatures, enabling direct loading into an optical dipole trap. Implements red-detuned lasers on the D2 line, supported by simulations. No direct evidence of reaching BEC or quantum degeneracy.

Shows sub-Doppler cooling of 40K using Raman gray molasses. Achieves 48 μK temperatures, enabling direct loading into an optical dipole trap. Implements red-detuned lasers on the D2 line, supported by simulations. No direct evidence of reaching BEC or quantum degeneracy.

34.4%

3.8

2019

[25] Fast and dense magneto-optical traps for strontium S. Snigirev, ..., and S. Blatt Physical Review A 2019 - 21 citations - Show abstract - Cite - PDF 34.4% topic match

Demonstrates enhanced sawtooth-wave adiabatic-passage cooling for strontium. Achieves efficient cooling, resulting in high atom numbers and notable phase-space densities. Provides insights into improved laser cooling but does not directly address achieving BEC.

Demonstrates enhanced sawtooth-wave adiabatic-passage cooling for strontium. Achieves efficient cooling, resulting in high atom numbers and notable phase-space densities. Provides insights into improved laser cooling but does not directly address achieving BEC.

34.1%

0.0

1999

[26] Near-recoil-limited temperatures obtained by laser trapping on the narrow /sup 1/S/sub 0/-/sup 3/P/sub 1/ intercombination transition of neutral strontium K. Vogel, ..., and J. Hall Proceedings of the 1999 Joint Meeting of the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (Cat. No.99CH36313) 1999 - 1 citations - Show abstract - Cite 34.1% topic match

Provides second-stage laser cooling of strontium atoms to near-recoil-limited temperatures. Demonstrates cooling neutral strontium atoms to ~10 μK using a narrow 689 nm intercombination line transition. Does not discuss achieving BEC or quantum degeneracy, focusing instead on intermediate temperature reduction steps.

Provides second-stage laser cooling of strontium atoms to near-recoil-limited temperatures. Demonstrates cooling neutral strontium atoms to ~10 μK using a narrow 689 nm intercombination line transition. Does not discuss achieving BEC or quantum degeneracy, focusing instead on intermediate temperature reduction steps.

33.6%

8.8

2000

[27] Beyond optical molasses: 3D raman sideband cooling of atomic cesium to high phase-space density A. Kerman, ..., and S. Chu Physical review letters 2000 - 217 citations - Show abstract - Cite 33.6% topic match

Demonstrates high phase-space density cooling of cesium atoms. Uses 3D Raman sideband cooling in optical lattices for enhanced density—almost 3 orders higher than optical molasses. Efficient for high-density samples, close to quantum degeneracy but does not explicitly achieve BEC.

Demonstrates high phase-space density cooling of cesium atoms. Uses 3D Raman sideband cooling in optical lattices for enhanced density—almost 3 orders higher than optical molasses. Efficient for high-density samples, close to quantum degeneracy but does not explicitly achieve BEC.

30.9%

0.5

2016

[28] All-optical cooling of Fermi gases via Pauli inhibition of spontaneous emission R. Onofrio Physical Review A 2016 - 4 citations - Show abstract - Cite - PDF 30.9% topic match

Proposes a cooling technique for Fermi gases via Pauli inhibition. Details how reduced linewidth lowers Doppler temperature, enabling quantum degeneracy. Combines magneto-optical and optical dipole traps, with potential for direct optical lattice implementation.

Proposes a cooling technique for Fermi gases via Pauli inhibition. Details how reduced linewidth lowers Doppler temperature, enabling quantum degeneracy. Combines magneto-optical and optical dipole traps, with potential for direct optical lattice implementation.

30.6%

5.6

2011

[29] All-optical production of a lithium quantum gas using narrow-line laser cooling P. M. Duarte, ..., and R. Hulet Physical Review A 2011 - 73 citations - Show abstract - Cite - PDF 30.6% topic match

Demonstrates laser cooling of lithium atoms to 59 μK using a narrow-line transition. Achieves efficient loading into an optical dipole trap and subsequent evaporative cooling to a quantum degenerate Fermi gas. Primarily utilizes narrow-line laser cooling as a precursor to evaporative cooling, not achieving BEC through laser cooling alone.

Demonstrates laser cooling of lithium atoms to 59 μK using a narrow-line transition. Achieves efficient loading into an optical dipole trap and subsequent evaporative cooling to a quantum degenerate Fermi gas. Primarily utilizes narrow-line laser cooling as a precursor to evaporative cooling, not achieving BEC through laser cooling alone.

29.9%

0.0

2003

[30] All-Optical Atomic Bose-Einstein Condensates M. Barrett, ..., and M. Chapman https://doi.org/10.1142/9789812705099_0004 2003 - 1 citations - Show abstract - Cite - PDF Abstract: Given the tremendous impact of BEC research in last 7 years and the continued growth of the field, it is important to explore different methods for reaching BEC, particularly methods that offer new capabilities, simplicity, or speed. We have recently demonstrated such a method by creating a Bose condensate of Rb atoms directly in a crossed-beam optical dipole force trap using tightly focused CO2 gas laser beams [1]. In the broader scope of research with ultracold degenerate gases, our system stands out for several reasons. First, all-optical BEC provides the first new path to achieving BEC since the first pioneering demonstrations [2-4], and it is surprising simple and an order of magnitude faster than standard BEC experiments. Also, optical trapping potentials are essentially spin-independent and hence are well suited for studying the formation and dynamics of spinor condensates. Finally, we can engineer a rich variety of spatial confinements, including large period oneand threedimensional lattices that offer the possibility of optically resolving individual lattice sites. All-optical methods of reaching the BEC phase transition have been pursued since the early days of laser cooling. Despite many impressive developments beyond the limits set by Doppler cooling, the best previous efforts yielded atomic phase space densities a factor of 3 away from the BEC transition [5, 6]. Hence, optical traps have played only a supporting role in BEC experiments. The MIT group used a magnetic trap with an ‘optical dimple’ to reversibly condense a magnetically confined cloud of atoms evaporatively cooled to just above the phase transition [7]. Additionally, Bose condensates created in magnetic traps have been successfully transferred to shallow optical traps for further study [8]. In all these cases, however, magnetic traps provided the principle increase of phase space density (by factors up to 10) to the BEC transition. Evaporative cooling in optical traps was first demonstrated in 1994, where, starting with only 5000 atoms, a phase space density increase of a factor of ~30 was realized [9]. Whereas the first demonstrations of evaporative cooling of alkali atoms in magnetic traps lead quickly to the observation of BEC, the progress in optical traps was slower. A principle challenge faced by all-optical traps is that the small 29.9% topic match

Shows an all-optical method to achieve BEC. Demonstrates BEC creation in Rb atoms using CO2 gas laser beams, faster than traditional methods. Focuses on dipole force traps, relevant for exploring non-evaporative BEC methods.

Shows an all-optical method to achieve BEC. Demonstrates BEC creation in Rb atoms using CO2 gas laser beams, faster than traditional methods. Focuses on dipole force traps, relevant for exploring non-evaporative BEC methods.

22.9%

5.7

2023

[31] Motional ground-state cooling of single atoms in state-dependent optical tweezers Christian Holzl, ..., and F. Meinert Physical Review Research 2023 - 9 citations - Show abstract - Cite - PDF 22.9% topic match

Demonstrates a novel laser cooling scheme for single atoms in optical tweezers. Focuses on sequential addressing of red sideband transitions via frequency chirping, achieving high ground-state populations in $^{88}$Sr atoms. Relevant for enhancing tweezer-based quantum technology, but does not directly address achieving BEC or quantum degeneracy through laser cooling.

Demonstrates a novel laser cooling scheme for single atoms in optical tweezers. Focuses on sequential addressing of red sideband transitions via frequency chirping, achieving high ground-state populations in $^{88}$Sr atoms. Relevant for enhancing tweezer-based quantum technology, but does not directly address achieving BEC or quantum degeneracy through laser cooling.

22.5%

0.7

2004

[32] Deeply subrecoil two-dimensional Raman cooling V. Boyer, ..., and W. Phillips Physical Review A 2004 - 15 citations - Show abstract - Cite - PDF 22.5% topic match

Shows 2D Raman cooling achieving deeply subrecoil temperatures. Cooled cesium atoms to an effective transverse temperature of 30 nK. Technique improves atomic clocks; potential implications for subrecoil cooling but does not directly address BEC.

Shows 2D Raman cooling achieving deeply subrecoil temperatures. Cooled cesium atoms to an effective transverse temperature of 30 nK. Technique improves atomic clocks; potential implications for subrecoil cooling but does not directly address BEC.

21.9%

0.6

2021

[33] Rapid generation of metastable helium Bose-Einstein condensates A. H. Abbas, ..., and S. Hodgman Physical Review A 2021 - 2 citations - Show abstract - Cite - PDF 21.9% topic match

Shows a cooling method related to BEC. Achieves BEC of metastable helium using Doppler cooling followed by optical dipole trap without intermediate evaporative cooling. In-trap Doppler cooling does not bypass the need for evaporative cooling entirely, final step involves evaporative cooling in the dipole trap.

Shows a cooling method related to BEC. Achieves BEC of metastable helium using Doppler cooling followed by optical dipole trap without intermediate evaporative cooling. In-trap Doppler cooling does not bypass the need for evaporative cooling entirely, final step involves evaporative cooling in the dipole trap.

19.2%

0.0

2002

[34] All-optical Bose-Einstein condensates Barrett, ..., and Chapman Quantum Electronics and Laser Science Conference 2002 - 0 citations - Show abstract - Cite 19.2% topic match

Shows creation of BEC directly in an optical trap Achieves BEC in $^87\text{Rb}$ atoms using laser loaded optical dipole trap and evaporative cooling Uses evaporative cooling, not laser cooling, to reach BEC, but high phase space density from laser cooling stage might interest those seeking laser cooling advancements.

Shows creation of BEC directly in an optical trap Achieves BEC in $^87\text{Rb}$ atoms using laser loaded optical dipole trap and evaporative cooling Uses evaporative cooling, not laser cooling, to reach BEC, but high phase space density from laser cooling stage might interest those seeking laser cooling advancements.

15.5%

0.0

2017

[35] Packing rubidium into quantum degeneracy J. Stajic Science 2017 - 0 citations - Show abstract - Cite 15.5% topic match

14.1%

0.6

2018

[36] Sub-Doppler Laser Cooling of 23 Na in Gray Molasses on the D 2 Line Z. Shi, ..., and Jing Zhang Chinese Physics Letters 2018 - 4 citations - Show abstract - Cite - PDF 14.1% topic match

13.0%

2.5

2019

[37] Strongly Correlated Quantum Gas Prepared by Direct Laser Cooling. P. Solano, ..., and V. Vuletić Physical review letters 2019 - 13 citations - Show abstract - Cite - PDF 13.0% topic match

11.6%

5.4

2003

[38] Recoil-limited laser cooling of 87Sr atoms near the Fermi temperature. T. Mukaiyama, ..., and M. Kuwata-Gonokami Physical review letters 2003 - 116 citations - Show abstract - Cite 11.6% topic match

Shows advanced laser cooling techniques for 87Sr atoms. Demonstrates magneto-optical trap and Doppler cooling achieving temperatures near the Fermi temperature. Does not directly achieve quantum degeneracy or BEC; focuses on cooling near recoil limit.

Shows advanced laser cooling techniques for 87Sr atoms. Demonstrates magneto-optical trap and Doppler cooling achieving temperatures near the Fermi temperature. Does not directly achieve quantum degeneracy or BEC; focuses on cooling near recoil limit.

11.3%

1.0

2014

[39] Site-Resolved Imaging with the Fermi Gas Microscope F. Huber Journal Not Provided 2014 - 10 citations - Show abstract - Cite 11.3% topic match

Shows site-resolved imaging using Raman sideband cooling. Demonstrates cooling ultracold fermions in an optical lattice with Raman sideband cooling for fluorescence imaging. Relevant to advanced laser cooling techniques but doesn't directly focus on achieving BEC or quantum degeneracy.

Shows site-resolved imaging using Raman sideband cooling. Demonstrates cooling ultracold fermions in an optical lattice with Raman sideband cooling for fluorescence imaging. Relevant to advanced laser cooling techniques but doesn't directly focus on achieving BEC or quantum degeneracy.

11.3%

0.0

2021

[40] UvA-DARE (Digital Academic Repository) Continuous Bose-Einstein condensation Chun-Chia Chen, ..., and F. Schreck Journal Not Provided 2021 - 0 citations - Show abstract - Cite 11.3% topic match

10.8%

21.5

2001

[41] All-optical formation of an atomic Bose-Einstein condensate. M. Barrett, ..., and M. Chapman Physical review letters 2001 - 501 citations - Show abstract - Cite - PDF 10.8% topic match

10.8%

28.6

1989

[42] Laser cooling below the Doppler limit by polarization gradients: simple theoretical models J. Dalibard and C. cohen-tannoudji Journal of The Optical Society of America B-optical Physics 1989 - 996 citations - Show abstract - Cite 10.8% topic match

10.7%

1.0

2017

[43] All-optical production of a large Bose-Einstein condensate in a double compressible crossed dipole trap K. Yamashita, ..., and T. Kinoshita Physical Review A 2017 - 8 citations - Show abstract - Cite - PDF 10.7% topic match

10.6%

0.2

2019

[44] An atomic marble run to unity phase-space density C. Chen Journal Not Provided 2019 - 1 citations - Show abstract - Cite 10.6% topic match

10.3%

1.0

2018

[45] Comparison of an efficient implementation of gray molasses to narrow-line cooling for the all-optical production of a lithium quantum gas Christine L. Satter, ..., and K. Dieckmann Physical Review A 2018 - 6 citations - Show abstract - Cite - PDF 10.3% topic match

10.1%

2.1

2016

[46] Degenerate Raman sideband cooling of K39 Michael Grobner, ..., and H. Nagerl Physical Review A 2016 - 16 citations - Show abstract - Cite - PDF 10.1% topic match

9.9%

2.3

1998

[47] Reabsorption of Light by Trapped Atoms Y. Castin, ..., and M. Lewenstein Physical Review Letters 1998 - 60 citations - Show abstract - Cite 9.9% topic match

9.8%

0.2

1998

[48] Laser-induced condensation of trapped bosonic gases Luis Santos, ..., and M. Lewenstein Journal of Physics B 1998 - 4 citations - Show abstract - Cite - PDF 9.8% topic match

9.7%

1.2

2011

[49] Laser-driven Sisyphus cooling in an optical dipole trap V. V. Ivanov and Subhadeep Gupta Physical Review A 2011 - 16 citations - Show abstract - Cite - PDF 9.7% topic match

9.6%

1.2

2011

[50] Collisional redistribution laser cooling of a high-pressure atomic gas U. Vogl, ..., and M. Weitz Journal of Modern Optics 2011 - 16 citations - Show abstract - Cite - PDF 9.6% topic match

9.4%

0.0

2005

[51] Evaporative CoolinginanOpticalDipoleTrapat1,umwavelength U. Hannover Journal Not Provided 2005 - 0 citations - Show abstract - Cite 9.4% topic match

9.3%

0.6

2003

[52] Bose-Einstein condensation of optically trapped cesium T. Weber, ..., and R. Grimm https://doi.org/10.1109/QELS.2003.238276 2003 - 13 citations - Show abstract - Cite 9.3% topic match

Shows the achievement of BEC with cesium atoms. Achieves Bose-Einstein condensation through evaporative cooling in an optical trap. Focuses on evaporative cooling techniques rather than laser cooling, making it less relevant to your specific interest in laser cooling to BEC.

Shows the achievement of BEC with cesium atoms. Achieves Bose-Einstein condensation through evaporative cooling in an optical trap. Focuses on evaporative cooling techniques rather than laser cooling, making it less relevant to your specific interest in laser cooling to BEC.

9.3%

0.0

2024

[53] Laser cooling $^{88}$Sr to microkelvin temperature with an integrated-photonics system Andrew R. Ferdinand, ..., and Scott B. Papp Journal Not Provided 2024 - 0 citations - Show abstract - Cite - PDF 9.3% topic match

9.2%

6.9

2012

[54] Sub-Doppler laser cooling of fermionic 40K atoms in three-dimensional gray optical molasses D. R. Fernandes, ..., and F. Chevy Europhysics Letters 2012 - 82 citations - Show abstract - Cite - PDF 9.2% topic match

9.1%

4.2

2024

[55] Coherent Three-Photon Excitation of the Strontium Clock Transition Junyu He, ..., and Florian Schreck Journal Not Provided 2024 - 1 citations - Show abstract - Cite - PDF 9.1% topic match

Shows a coherent three-photon excitation in strontium BEC. Demonstrates continuous Bose-Einstein condensate of strontium atoms and three-photon STIRAP-like transfer. Focus on outcoupling for a continuous atom laser, not directly on laser cooling to BEC.

Shows a coherent three-photon excitation in strontium BEC. Demonstrates continuous Bose-Einstein condensate of strontium atoms and three-photon STIRAP-like transfer. Focus on outcoupling for a continuous atom laser, not directly on laser cooling to BEC.

8.9%

5.3

2009

[56] Bose-Einstein condensation of 84Sr. Y. M. D. Escobar, ..., and T. Killian Physical review letters 2009 - 78 citations - Show abstract - Cite - PDF 8.9% topic match

8.9%

0.1

2006

[57] All-optical spinor Bose-Einstein condensation and the spinor dynamics-driven atom laser N. Lundblad Journal Not Provided 2006 - 2 citations - Show abstract - Cite Abstract: Optical trapping as a viable means of exploring the physics of ultracold dilute atomic gases has revealed a new spectrum of physical phenomena. In particular, macroscopic and sudden occupation of the ground state below a critical temperature—-a phenomenon known as Bose-Einstein condensation—-has become an even richer system for the study of quantum mechanics, ultracold collisions, and many-body physics in general. Optical trapping liberates the spin degree of the BEC, making the order parameter vectorial (‘spinor BEC’), as opposed to the scalar order of traditional magnetically trapped condensates. The work described within is divided into two main efforts. The first encompasses the all-optical creation of a Bose-Einstein condensate in rubidium vapor. An all-optical path to spinor BEC (as opposed to transfer to an optical trap from a magnetic-trap condensate) was desired both for the simplicity of the experimental setup and also for the potential gains in speed of creation; evaporative cooling, the only known path to dilute-gas condensation, works only as efficiently as the rate of elastic collisions in the gas, a rate that starts out much higher in optical traps. The first all-optical BEC was formed elsewhere in 2001; the years following saw many groups worldwide seeking to create their own version. Our own all-optical spinor BEC, made with a single-beam dipole trap formed by a focused CO2 laser, is described here, with particular attention paid to trap loading, measurement of trap parameters, and the use of a novel 780 nm high-power laser system. The second part describes initial experiments performed with the nascent condensate. The spinor properties of the condensate are documented, and a measurement is made of the density-dependent rate of spin mixing in the condensate. In addition, we demonstrate a novel dual-beam atom laser formed by outcoupling oppositely polarized components of the condensate, whose populations have been coherently evolved through spin dynamics. We drive coherent spin-mixing evolution through adiabatic compression of the initially weak trap. Such dual beams, nominally number-correlated through the angular momentum-conserving collision m=0 + m=0 m=+1 + m=-1 have been proposed as tools to explore entanglement and squeezing in Bose-Einstein condensates. 8.9% topic match

8.5%

0.0

1998

[58] Narrow line cooling of strontium to the recoil limit Koen Vogel, ..., and J. L. Hall 1998 Conference on Precision Electromagnetic Measurements Digest (Cat. No.98CH36254) 1998 - 1 citations - Show abstract - Cite 8.5% topic match

8.4%

0.3

2017

[59] Laser cooling of Rb 85 atoms to the recoil-temperature limit Chang Huang, ..., and Shau-Yu Lan Physical Review A 2017 - 2 citations - Show abstract - Cite - PDF 8.4% topic match

8.2%

8.3

2020

[60] Continuous Bose–Einstein condensation Chun-Chia Chen, ..., and Florian Schreck Nature 2020 - 31 citations - Show abstract - Cite - PDF 8.2% topic match

8.1%

5.8

2012

[61] Production of quantum-degenerate strontium gases S. Stellmer, ..., and F. Schreck Physical Review A 2012 - 68 citations - Show abstract - Cite - PDF 8.1% topic match

8.0%

1.4

2021

[62] Three-stage laser cooling of Sr atoms using the 5s5pP23 metastable state below Doppler temperatures T. Akatsuka, ..., and H. Katori Physical Review A 2021 - 5 citations - Show abstract - Cite 8.0% topic match

7.9%

0.2

2015

[63] All-optical production of 6Li quantum gases A. Burchianti, ..., and G. Roati Journal of Physics: Conference Series 2015 - 2 citations - Show abstract - Cite - PDF 7.9% topic match

7.9%

2.6

2017

[64] Sub-Doppler laser cooling of fermionic 40 K atoms in three-dimensional gray optical molasses G. Bruce, ..., and S. Kuhr Journal Not Provided 2017 - 20 citations - Show abstract - Cite 7.9% topic match

7.8%

1.9

2011

[65] Optimized Bose-Einstein-condensate production in a dipole trap based on a 1070-nm multifrequency laser: Influence of enhanced two-body loss on the evaporation process T. Lauber, ..., and G. Birkl Physical Review A 2011 - 25 citations - Show abstract - Cite - PDF 7.8% topic match

7.6%

3.7

2000

[66] 3D raman sideband cooling of cesium atoms at high density D. Han, ..., and D. Weiss Physical review letters 2000 - 89 citations - Show abstract - Cite 7.6% topic match

7.5%

7.3

2014

[67] Efficient all-optical production of large Li 6 quantum gases using D 1 gray-molasses cooling A. Burchianti, ..., and G. Roati Physical Review A 2014 - 75 citations - Show abstract - Cite - PDF 7.5% topic match

7.2%

0.0

2021

[68] UvA-DARE (Digital Academic Repository) Steady-state magneto-optical trap of fermionic strontium on a narrow-line transition Rodrigo Gonz'alez Escudero, ..., and F. Schreck Journal Not Provided 2021 - 0 citations - Show abstract - Cite 7.2% topic match

7.1%

3.1

2020

[69] Sub-second production of a quantum degenerate gas G. Phelps, ..., and M. Greiner arXiv: Quantum Gases 2020 - 13 citations - Show abstract - Cite - PDF 7.1% topic match

6.9%

0.8

2007

[70] Evaporative Cooling of Atoms to Quantum Degeneracy in an Optical Dipole Trap S. Chaudhuri, ..., and C. Unnikrishnan https://doi.org/10.1088/1742-6596/80/1/012036 2007 - 14 citations - Show abstract - Cite 6.9% topic match

6.9%

1.8

2013

[71] Sisyphus Cooling of Lithium P. Hamilton, ..., and H. Mȕller Physical Review A 2013 - 20 citations - Show abstract - Cite - PDF 6.9% topic match

6.8%

8.9

2013

[72] Gray-molasses cooling of 39K to a high phase-space density G. Salomon, ..., and T. Bourdel Europhysics Letters 2013 - 97 citations - Show abstract - Cite - PDF 6.8% topic match

6.7%

0.1

2017

[73] Raman sideband cooling of rubidium atoms in optical lattice Chun-hua Wei and Shuhua Yan Chinese Physics B 2017 - 1 citations - Show abstract - Cite 6.7% topic match

6.5%

0.0

2015

[74] Achieving the Second Doppler Cooling and Measuring the Temperature of Strontium Atoms Xie Yu-li Journal Not Provided 2015 - 0 citations - Show abstract - Cite 6.5% topic match

6.3%

6.7

1998

[75] Resolved-Sideband Raman Cooling to the Ground State of an Optical Lattice S. Hamann, ..., and P. Jessen Physical Review Letters 1998 - 179 citations - Show abstract - Cite - PDF 6.3% topic match

6.0%

0.0

2022

[76] Peer Review File Manuscript Title: Continuous Bose-Einstein condensation Reviewer Comments & Author Rebuttals No author found Journal Not Provided 2022 - 0 citations - Show abstract - Cite Abstract: The authors report the creation of a continuous Bose-condensed sample of strontium atoms, which constitutes a real milestone in AMO physics. The key ingredients that allow its realization, i.e. a continuous gain mechanism and a continuous supply of ultracold atoms, have been independently investigated both theoretically and experimentally in the last 20 years, and several intermediate steps have been achieved in the authors' group in the last few years. The achievement of this landmark objective is a major result, and importantly it paves the road for intriguing follow-up applications, one for all the CW atom lasers. The authors give a precise and detailed summary of the key advances that one step at a time brought to their present result, each time underlying their meaning and limitations. That is the case of both the Bose-stimulated gain mechanisms and the continuous supply of cold atoms at high phase space density. The long quest undertaken by Schreck and co-workers to overtake the paradigm of time-sequential cooling stages towards ultracold atoms has proven successful, and the continuous BEC has now become a reality. How hot atoms evaporated in an oven continuously end up in the CW BEC is described in an exemplary way, with a wealth of quantitative details on the intermediate cooling steps atomic flux, temperature, trap specifications. Particularly engaging is the section devoted to the demonstration that not only the BEC exists, but it is also continuous. The condensate lies within a thermal cloud, hence it is not trivial to demonstrate its presence; clear evidence is however reported, in terms of the observed bi-modal distribution and the anisotropic expansion dynamics of the atomic sample. That the BEC lasts indefinitely i.e. the main claim of this article is proven in several ways in order to dispel any possible doubts: the BEC existence is observed for intervals longer than the lifetime of a pure BEC and of the limitation imposed by the vacuum quality; the dynamics of the CW BEC is studied by interrupting and reactivating the BEC loading in key places of the space-sequential cooling, and a quantitative analysis of the losses mechanism. Subtle features, like the non-thermal equilibrium of the CW BEC, are analyzed in depth, with relevant measurements and specific modeling. 6.0% topic match

5.9%

0.0

2007

[77] Evaporative Cooling of Atoms to Quantum Degeneracy in an Optical Dipole Trap Saptarishi Chaudhuri, ..., and C. S. Unnikrishnan Journal of Physics: Conference Series 2007 - 0 citations - Show abstract - Cite 5.9% topic match

5.9%

0.0

2017

[78] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 5.9% topic match

5.8%

5.2

2003

[79] Cooling and trapping of atomic strontium Xinye Xu, ..., and Jun Ye Journal of The Optical Society of America B-optical Physics 2003 - 112 citations - Show abstract - Cite - PDF 5.8% topic match

5.7%

0.3

2002

[80] The Quest for BEC P. Straten and H. Metcalf https://doi.org/10.1002/3527603417.CH1 2002 - 7 citations - Show abstract - Cite 5.7% topic match

5.6%

2.0

2016

[81] All-optical production and transport of a large 6 Li quantum gas in a crossed optical dipole trap C. Gross, ..., and K. Dieckmann Physical Review A 2016 - 17 citations - Show abstract - Cite - PDF 5.6% topic match

5.5%

0.2

2015

[82] Sub-Doppler Cooling of Fermionic Lithium No author found Journal Not Provided 2015 - 2 citations - Show abstract - Cite 5.5% topic match

5.5%

2.1

2021

[83] Steady-state magneto-optical trap of fermionic strontium on a narrow-line transition Rodrigo Gonz'alez Escudero, ..., and F. Schreck Physical Review Research 2021 - 7 citations - Show abstract - Cite - PDF 5.5% topic match

5.5%

0.5

2011

[84] Three Dimensional Raman Cooling using Velocity Selective Rapid Adiabatic Passage A. Kuhn, ..., and C. Salomon arXiv: Quantum Gases 2011 - 7 citations - Show abstract - Cite - PDF 5.5% topic match

5.5%

3.6

1996

[85] Raman cooling of atoms in an optical dipole trap. Heun-Jin Lee, ..., and Steven Chu Physical review letters 1996 - 102 citations - Show abstract - Cite 5.5% topic match

5.1%

0.2

2019

[86] Entropy Exchange and Thermodynamic Properties of the Single Ion Cooling Process Jian-guo Miao, ..., and Pingxing Chen Entropy 2019 - 1 citations - Show abstract - Cite - PDF 5.1% topic match

4.9%

1.9

2010

[87] Bose-Einstein condensation of 86Sr S. Stellmer, ..., and F. Schreck Physical Review A 2010 - 26 citations - Show abstract - Cite - PDF 4.9% topic match

4.9%

0.7

2012

[88] Alternative route to Bose-Einstein condensation of two-electron atoms P. Halder, ..., and A. Hemmerich Physical Review A 2012 - 9 citations - Show abstract - Cite - PDF 4.9% topic match

4.8%

1.3

2022

[89] Motion-selective coherent population trapping by Raman sideband cooling along two paths in a Λ configuration S. Park, ..., and D. Cho Physical Review A 2022 - 3 citations - Show abstract - Cite - PDF 4.8% topic match

4.5%

0.3

2018

[90] Sub-Doppler laser cooling of 39 K via the 4 S → 5 P transition G. Unnikrishnan, ..., and H.-C. Nägerl Journal Not Provided 2018 - 2 citations - Show abstract - Cite 4.5% topic match

4.4%

3.3

2001

[91] Quenched narrow-line laser cooling of 40 Ca to near the photon recoil limit E. A. Curtis, ..., and U. C. A. Boulder Physical Review A 2001 - 76 citations - Show abstract - Cite - PDF 4.4% topic match

4.3%

0.0

2021

[92] Production of 87Rb Bose-Einstein Condensate in an Asymmetric Crossed Optical Dipole Trap Zhu Ma, ..., and Chaohong Lee Chinese Physics Letters 2021 - 0 citations - Show abstract - Cite 4.3% topic match

4.2%

30.9

2001

[93] Bose-Einstein Condensation in Dilute Gases C. Pethick and H. Smith Physics Today 2001 - 703 citations - Show abstract - Cite - PDF 4.2% topic match

4.1%

0.0

2005

[94] Evaporative cooling in an optical dipole trap at 1 /spl mu/m wavelength T. Muther, ..., and G. Birkl EQEC '05. European Quantum Electronics Conference, 2005. 2005 - 0 citations - Show abstract - Cite 4.1% topic match

4.0%

4.4

2013

[95] Quantum interference-enhanced deep sub-Doppler cooling of 39 K atoms in gray molasses D. Nath, ..., and C. Unnikrishnan Physical Review A 2013 - 50 citations - Show abstract - Cite - PDF 4.0% topic match

3.9%

1.4

2021

[96] Λ-enhanced gray molasses in a tetrahedral laser beam geometry. D. Barker, ..., and S. Eckel Optics express 2021 - 4 citations - Show abstract - Cite - PDF 3.9% topic match

3.8%

23.9

2011

[97] The buffer gas beam: an intense, cold, and slow source for atoms and molecules. N. Hutzler, ..., and J. Doyle Chemical reviews 2011 - 306 citations - Show abstract - Cite - PDF 3.8% topic match

3.6%

0.6

2019

[98] A dipolar quantum gas microscope G. Phelps Journal Not Provided 2019 - 3 citations - Show abstract - Cite 3.6% topic match

3.6%

0.0

2017

[99] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 3.6% topic match

3.5%

0.8

2014

[100] Interferometric Laser Cooling of Atomic Rubidium. A. Dunning, ..., and T. Freegarde Physical review letters 2014 - 8 citations - Show abstract - Cite - PDF 3.5% topic match

3.5%

19.9

2002

[101] Bose-Einstein Condensation of Cesium T. Weber, ..., and R. Grimm Science 2002 - 433 citations - Show abstract - Cite - PDF 3.5% topic match

3.3%

5.3

2005

[102] All-optical Bose-Einstein condensation using a compressible crossed dipole trap T. Kinoshita, ..., and D. Weiss Physical Review A 2005 - 104 citations - Show abstract - Cite 3.3% topic match

3.3%

0.0

2002

[103] Laser cooling, evaporative cooling and Bose-Einstein condensation P. Ghosh Journal Not Provided 2002 - 0 citations - Show abstract - Cite 3.3% topic match

3.3%

0.0

2017

[104] Raman sideband cooling of rubidium atoms in optical lattice Chun-Hua 春华 Wei 魏 and Shu-Hua 树华 Yan 颜 Chinese Physics B 2017 - 0 citations - Show abstract - Cite 3.3% topic match

3.2%

11.7

2009

[105] Rapid production ofR87bBose-Einstein condensates in a combined magnetic and optical potential Y.-J. Lin, ..., and J. V. Porto Physical Review A 2009 - 180 citations - Show abstract - Cite - PDF 3.2% topic match

3.2%

0.6

2005

[106] Two Photon Cooling of Magnesium Atoms N. Malossi, ..., and E. Arimondo Physical Review A 2005 - 11 citations - Show abstract - Cite 3.2% topic match

3.1%

4.7

2014

[107] Simultaneous sub-Doppler laser cooling of fermionic Li 6 and K 40 on the D 1 line: Theory and experiment F. Sievers, ..., and F. Chevy Physical Review A 2014 - 46 citations - Show abstract - Cite - PDF 3.1% topic match

3.1%

13.1

2009

[108] Bose-Einstein condensation of strontium. S. Stellmer, ..., and F. Schreck Physical review letters 2009 - 195 citations - Show abstract - Cite - PDF 3.1% topic match

3.0%

0.6

2023

[109] Quantum degenerate Bose-Fermi atomic gas mixture of 23Na and 40K Z. Li 李, ..., and J. Zhang 张 Chinese Physics B 2023 - 1 citations - Show abstract - Cite 3.0% topic match

3.0%

0.0

2000

[110] Vibrational relaxation of ultracold lithium dimers J. Gerton, ..., and R. Hulet Quantum Electronics and Laser Science Conference 2000 - 0 citations - Show abstract - Cite 3.0% topic match

2.9%

0.1

2015

[111] Experiments with Ultracold Fermi Gases : quantum Degeneracy of Potassium-40 and All-solid-state Laser Sources for Lithium N. Kretzschmar Journal Not Provided 2015 - 1 citations - Show abstract - Cite 2.9% topic match

2.9%

0.1

1996

[112] Bose-Einstein Condensation in a Gas of Sodium Atoms K. B. Davis, ..., and W. Ketterle EQEC'96. 1996 European Quantum Electronic Conference 1996 - 3 citations - Show abstract - Cite - PDF 2.9% topic match

2.9%

0.6

2016

[113] Laser-cooling atoms to indistinguishability: Atomic Hong-Ou-Mandel interference and entanglement through spin-exchange A. Kaufman Physics 2016 - 5 citations - Show abstract - Cite 2.9% topic match

2.8%

828.8

1962

[114] A and V R. Stephenson British Journal of Ophthalmology 1962 - 51261 citations - Show abstract - Cite - PDF 2.8% topic match

2.8%

9.0

2019

[115] All-Optical Bose-Einstein Condensates in Microgravity. Gabriel Condon, ..., and Philippe Bouyer Physical review letters 2019 - 47 citations - Show abstract - Cite - PDF 2.8% topic match

2.7%

0.4

1996

[116] The Richtmyer Memorial Lecture: Bose–Einstein Condensation in an Ultracold Gas C. Wieman American Journal of Physics 1996 - 11 citations - Show abstract - Cite 2.7% topic match

2.7%

0.0

2021

[117] Topical: Computation as a Vital Tool to Enable Quantitative Predictions of Many-Body Physics of Ultracold Atoms in Bose-Einstein Condensate Zhigang Wu Journal Not Provided 2021 - 0 citations - Show abstract - Cite 2.7% topic match

2.6%

2.4

2012

[118] Direct evaporative cooling of 39 K atoms to Bose-Einstein condensation M. Landini, ..., and M. Fattori Physical Review A 2012 - 29 citations - Show abstract - Cite - PDF 2.6% topic match

2.6%

4.7

2015

[119] Sub-Doppler cooling of sodium atoms in gray molasses Giacomo Colzi, ..., and G. Ferrari Physical Review A 2015 - 41 citations - Show abstract - Cite - PDF 2.6% topic match

2.6%

9.9

1992

[120] Laser cooling below a photon recoil with three-level atoms. M. Kasevich and S. Chu Physical review letters 1992 - 317 citations - Show abstract - Cite 2.6% topic match

2.5%

0.0

2022

[121] Nonlinear Dynamics in Isotropic and Anisotropic Magneto-Optical Traps F. Haas and L. Soares Atoms 2022 - 0 citations - Show abstract - Cite - PDF 2.5% topic match

2.4%

4.5

2009

[122] Comprehensive Control of Atomic Motion M. Raizen Science 2009 - 68 citations - Show abstract - Cite 2.4% topic match

2.3%

None

[123] Mass Change Hybrid SST-QGG Technology Report Nan Yu and S. Bettadpur Journal Not Provided None - 0 citations - Show abstract - Cite 2.3% topic match

2.3%

0.0

1998

[124] Kinetic evolution of trapped Bose gas in evaporative cooling Makoto Yamashita, ..., and N. Imoto Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236) 1998 - 0 citations - Show abstract - Cite 2.3% topic match

2.2%

0.4

2012

[125] Simple and Fast Production of Bose–Einstein Condensate in a 1 µm Cross-Beam Dipole Trap Sanjay Kumar, ..., and K. Nakagawa Journal of the Physical Society of Japan 2012 - 5 citations - Show abstract - Cite 2.2% topic match

2.2%

0.0

2001

[126] Bose–Einstein Condensation in Dilute Gases: Trapping and cooling of atoms C. Pethick and H. Smith https://doi.org/10.1017/CBO9780511755583.005 2001 - 0 citations - Show abstract - Cite 2.2% topic match

2.2%

2.7

2011

[127] Continuous loading of a conservative potential trap from an atomic beam. M. Falkenau, ..., and T. Pfau Physical review letters 2011 - 37 citations - Show abstract - Cite - PDF 2.2% topic match

2.2%

1.6

2006

[128] Dissipative dynamics of atomic Hubbard models coupled to a phonon bath: dark state cooling of atoms within a Bloch band of an optical lattice A. Griessner, ..., and Peter Zoller New Journal of Physics 2006 - 28 citations - Show abstract - Cite - PDF 2.2% topic match

2.0%

1.7

2013

[129] Evaporative cooling of a small number of atoms in a single-beam microscopic dipole trap R. Bourgain, ..., and A. Browaeys Physical Review A 2013 - 19 citations - Show abstract - Cite - PDF 2.0% topic match

2.0%

1.2

2021

[130] Hybrid evaporative cooling of 133Cs atoms to Bose-Einstein condensation. Yunfei Wang, ..., and Suotang Jia Optics express 2021 - 4 citations - Show abstract - Cite 2.0% topic match

1.8%

0.2

2008

[131] Bose-Einstein condensation in optical traps and in a 1D optical lattice S. Chaudhuri, ..., and C. Unnikrishnan Current Science 2008 - 4 citations - Show abstract - Cite 1.8% topic match

1.8%

0.0

2019

[132] Towards laser cooling and trapping of unstable caesium atoms Alexandros Giatzoglou Journal Not Provided 2019 - 0 citations - Show abstract - Cite 1.8% topic match

1.7%

5.0

2011

[133] Sub-Doppler laser cooling of potassium atoms M. Landini, ..., and G. Modugno Physical Review A 2011 - 66 citations - Show abstract - Cite - PDF 1.7% topic match

1.6%

0.0

2000

[134] Evaporative cooling of cesium in a surface trap M. Hammes, ..., and R. Grimm Conference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504) 2000 - 0 citations - Show abstract - Cite 1.6% topic match

1.6%

0.0

2013

[135] Production of 87Rb Bose-Einstein condensates in a hybrid trap 段亚凡, ..., and 王育竹 Journal Not Provided 2013 - 0 citations - Show abstract - Cite 1.6% topic match

1.6%

1.2

2017

[136] Ultracold Molecular Assembly Lee R. Liu, ..., and Kang-kuen Ni Bulletin of the American Physical Society 2017 - 9 citations - Show abstract - Cite - PDF 1.6% topic match

1.4%

3.6

2016

[137] Production of large 41 K Bose-Einstein condensates using D 1 gray molasses Hao-Ze Chen, ..., and Jian-Wei Pan Physical Review A 2016 - 29 citations - Show abstract - Cite - PDF 1.4% topic match

1.2%

0.8

2010

[138] Evaporative cooling of 87 Rb atoms into Bose-Einstein condensate in an optical dipole trap Dezhi Xiong, ..., and Jing Zhang Chinese Optics Letters 2010 - 11 citations - Show abstract - Cite - PDF 1.2% topic match

1.1%

9.0

2007

[139] 39K Bose-Einstein condensate with tunable interactions. G. Roati, ..., and G. Modugno Physical review letters 2007 - 157 citations - Show abstract - Cite - PDF 1.1% topic match

1.0%

0.8

1991

[140] Laser cooling and trapping of atoms C. Foot Contemporary Physics 1991 - 25 citations - Show abstract - Cite 1.0% topic match

0.9%

0.6

2023

[141] Efficient cooling of high-angular-momentum atoms Logan E. Hillberry, ..., and M. Raizen Journal of Physics B: Atomic, Molecular and Optical Physics 2023 - 1 citations - Show abstract - Cite - PDF 0.9% topic match

0.9%

0.0

2013

[142] Production of 87Rb Bose—Einstein condensates in a hybrid trap Y. Duan 段, ..., and Y. Wang 王 Chinese Physics B 2013 - 0 citations - Show abstract - Cite 0.9% topic match

0.8%

0.1

2005

[143] Quantum Manipulation of Ultracold Atoms E. Emery Journal Not Provided 2005 - 1 citations - Show abstract - Cite 0.8% topic match

0.8%

1.2

2018

[144] Fast production of rubidium Bose–Einstein condensate in a dimple trap Dizhou Xie, ..., and B. Yan Journal of The Optical Society of America B-optical Physics 2018 - 8 citations - Show abstract - Cite 0.8% topic match

0.7%

0.0

2017

[145] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 0.7% topic match

0.7%

0.7

2017

[146] A simple recipe for rapid all-optical formation of spinor Bose–Einstein condensates Chih-Yuan Huang, ..., and Ming-Shien Chang Journal of Physics B: Atomic, Molecular and Optical Physics 2017 - 5 citations - Show abstract - Cite 0.7% topic match

0.6%

0.1

1994

[147] Subrecoil Raman Cooling of Cesium Atoms J. Reichel, ..., and C. Salomon EPL (Europhysics Letters) 1994 - 2 citations - Show abstract - Cite 0.6% topic match

0.6%

0.1

2007

[148] Ultracold 88 Sr atoms for an optical lattice clock T. Legero, ..., and U. Sterr Journal Not Provided 2007 - 2 citations - Show abstract - Cite 0.6% topic match

0.6%

1.4

2017

[149] Bose-Einstein condensation of erbium atoms in a quasielectrostatic optical dipole trap J. Ulitzsch, ..., and M. Weitz Physical Review A 2017 - 10 citations - Show abstract - Cite - PDF 0.6% topic match

0.5%

1.9

2018

[150] Sisyphus optical lattice decelerator Chun-Chia Chen, ..., and B. Pasquiou Physical Review A 2018 - 11 citations - Show abstract - Cite - PDF 0.5% topic match

0.5%

60.3

1995

[151] Bose-Einstein condensation in a gas of sodium atoms. K. B. Davis, ..., and W. Ketterle Physical review letters 1995 - 1736 citations - Show abstract - Cite - PDF 0.5% topic match

0.4%

1.0

2009

[152] Trapping and cooling of Sr+ ions: strings and large clouds S. Removille, ..., and Luca Guidoni Journal of Physics B: Atomic, Molecular and Optical Physics 2009 - 15 citations - Show abstract - Cite 0.4% topic match

0.4%

148.2

2012

[153] Challenges for density functional theory. A. Cohen, ..., and Weitao Yang Chemical reviews 2012 - 1876 citations - Show abstract - Cite 0.4% topic match

0.4%

1.1

2020

[154] Midinfrared magneto-optical trap of metastable strontium for an optical lattice clock R. Hobson, ..., and P. Gill Physical Review A 2020 - 5 citations - Show abstract - Cite - PDF 0.4% topic match

0.4%

2.3

2020

[155] The emergence of picokelvin physics Xuzong Chen and Bo Fan Reports on Progress in Physics 2020 - 10 citations - Show abstract - Cite - PDF 0.4% topic match

0.4%

0.6

2014

[156] Coherent atomic manipulation and cooling using composite optical pulse sequences A. Dunning Journal Not Provided 2014 - 6 citations - Show abstract - Cite 0.4% topic match

0.4%

0.0

2017

[157] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 0.4% topic match

0.3%

0.0

2023

[158] A Superconducting Single-Atom Phonon Laser C. Potts, ..., and G. A. Steele Journal Not Provided 2023 - 0 citations - Show abstract - Cite - PDF 0.3% topic match

0.3%

15.1

1988

[159] Laser cooling below the one-photon recoil by velocity-selective coherent population trapping. A. Aspect, ..., and C. cohen-tannoudji Physical review letters 1988 - 544 citations - Show abstract - Cite - PDF 0.3% topic match

0.2%

0.0

1998

[160] Narrow-line cooling in a strontium vapor cell magneto-optical trap K. Vogel, ..., and J. L. Hall Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236) 1998 - 0 citations - Show abstract - Cite 0.2% topic match

0.2%

1.1

2019

[161] Laser Cooling and Inelastic Collisions of the Polyatomic Radical SrOH I. Kozyryev Bulletin of the American Physical Society 2019 - 6 citations - Show abstract - Cite 0.2% topic match

0.2%

5.7

2016

[162] Rapid cooling to quantum degeneracy in dynamically shaped atom traps Richard J Roy, ..., and Subhadeep Gupta Physical Review A 2016 - 49 citations - Show abstract - Cite - PDF 0.2% topic match

0.2%

14.8

2015

[163] Submillikelvin Dipolar Molecules in a Radio-Frequency Magneto-Optical Trap. M. Steinecker, ..., and D. DeMille Physical review letters 2015 - 131 citations - Show abstract - Cite - PDF 0.2% topic match

0.2%

3.0

2020

[164] PyLCP: A Python package for computing laser cooling physics S. Eckel, ..., and J. Scherschligt Computer physics communications 2020 - 14 citations - Show abstract - Cite - PDF 0.2% topic match

0.2%

0.0

2011

[165] Time-averaged optical dipole traps for Bose-Einstein condensates L. Humbert, ..., and H. Rubinsztein-Dunlop 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology 2011 - 0 citations - Show abstract - Cite 0.2% topic match

0.2%

0.0

2019

[166] Hladni atomi u višemodnom optičkom rezonatoru Matej Vilić Journal Not Provided 2019 - 0 citations - Show abstract - Cite 0.2% topic match

0.2%

0.1

2018

[167] Sub-Doppler Laser Cooling of 23Na in Gray Molasses on the D2 Line Zhenlian 振莲 Shi 师, ..., and J. Zhang 张 Chinese Physics Letters 2018 - 1 citations - Show abstract - Cite - PDF 0.2% topic match

0.2%

0.4

2006

[168] Coherent quantum engineering of free-space laser cooling J. Dunn, ..., and F. Cruz Physical Review A 2006 - 7 citations - Show abstract - Cite - PDF 0.2% topic match

0.2%

0.3

2007

[169] Ultracold 88Sr atoms for an optical lattice clock T. Legero, ..., and U. Sterr 2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum 2007 - 5 citations - Show abstract - Cite 0.2% topic match

0.1%

55.0

2012

[170] Ultracold Atoms in Optical Lattices: Simulating quantum many-body systems M. Lewenstein, ..., and V. Ahufinger Journal Not Provided 2012 - 679 citations - Show abstract - Cite 0.1% topic match

0.1%

0.0

2001

[171] Bose-Einstein condensates in a large-volume optical trap A. Görlitz, ..., and W. Ketterle Quantum Electronics and Laser Science Conference 2001 - 0 citations - Show abstract - Cite 0.1% topic match

0.1%

0.0

2003

[172] Evanescent-wave trapping of Cs at the crossover to two-dimensionality D. Rychtarik, ..., and R. Grimm 2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665) 2003 - 0 citations - Show abstract - Cite 0.1% topic match

0.1%

14.1

1979

[173] Laser cooling of atoms D. Wineland and W. Itano Physical Review A 1979 - 635 citations - Show abstract - Cite 0.1% topic match

0.1%

9.8

2007

[174] Quantum degenerate two-species fermi-fermi mixture coexisting with a bose-einstein condensate. M. Taglieber, ..., and K. Dieckmann Physical review letters 2007 - 166 citations - Show abstract - Cite - PDF 0.1% topic match

0.1%

0.2

2013

[175] Production of 87Rb Bose—Einstein condensates in a hybrid trap Duan Ya-Fan, ..., and Wang Yu-zhu Chinese Physics B 2013 - 2 citations - Show abstract - Cite 0.1% topic match

0.1%

0.0

1998

[176] Bose-Einstein condensation of large numbers of atoms in magnetic TOP trap D. Han, ..., and D. Heinzen Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236) 1998 - 0 citations - Show abstract - Cite 0.1% topic match

0.1%

2.6

1995

[177] Laser-like Scheme for Atomic-Matter Waves R. Spreeuw, ..., and M. Wilkens EPL 1995 - 76 citations - Show abstract - Cite 0.1% topic match

0.1%

0.0

2022

[178] Single Gaussian temporal pulse modulated controlled-Z gate of neutral atoms under symmetrically optical pumping X. X. Li, ..., and Weibin Li Journal Not Provided 2022 - 0 citations - Show abstract - Cite 0.1% topic match

0.1%

37.3

2014

[179] Magneto-optical trapping of a diatomic molecule J. Barry, ..., and D. DeMille Nature 2014 - 387 citations - Show abstract - Cite - PDF 0.1% topic match

0.1%

0.3

2011

[180] Numerical modeling of collisional dynamics of Sr in an optical dipole trap M. Yan, ..., and M. Corcoran Journal Not Provided 2011 - 4 citations - Show abstract - Cite Abstract: Studies of quantum gases have been extended to divalent-atom gases including ytterbium (Yb) and alkaline-earth atoms, such as strontium (Sr) used in our experiment. These systems have become topics of many recent theoretical works proposing quantum computing in optical lattices and creation of novel quantum fluids. Particularly, one significant feature of such atoms, the inter-combination transition with extremely narrow natural line width, has attracted increasing theoretical and experimental interest for an optical Feshbach resonance (OFR), which provides a new method to manipulate the interaction between ultracold atoms. We have achieved the quantum degeneracy of several isotopes of Sr, i.e. the BoseEinstein condensates (BEC) of Sr and Sr, as well as the degenerate Fermi gas of Sr. Forced evaporation cooling in an optical dipole trap (ODT), a standard technique for producing degenerate gases, is employed in our experiments. Accordingly, it is necessary to understand the collisional dynamics of trapped untracold atoms in the ODT during the evaporative cooling in order to improve the efficiency of cooling to obtain the quantum degenerate gases. In this work, a numerical model has been developed to describe evaporative cooling in an ODT. It can be used for traps that possess little spatial symmetry and when the ratio of trap depth to sample temperature is relatively small. It is implemented by a MATHEMATICA code, which provides an appropriate expression for the potential formed by the ODT lasers, and calculates important parameters such as trap oscillation frequencies that can be compared to measurements of trap parameters to confirm that we characterize our ODT well. It is important particularly at the end of the forced-evaporative cooling where gravity significantly modifies the potential. Moreover, it also calculates numerical approximations to various statistical mechanical quantities at a given temperature that can be used for efficient numerical calculations of evaporation dynamics. Due to the temperature and ODT laser intensity dependence, these statistical mechanical quantities are evaluated at a series of temperature and laser intensity points, which is used to generate interpolating functions of all quantities instead of time-intensive integral evaluations. Using the interpolating functions, the atom number and temperature evolution can be easily found for a given initial condition from the evolution equations related to all these quantities by employing an ordinary differential equation solver in MATHEMATICA . It is important to note that having interpolating functions for the variation of potential and all quantities calculated from potential with ODT laser intensity allows us to model forced evaporation, since the ODT laser intensity is varied in a known way with time during the evaporation trajectory. Then, ultracold collision properties, e.g. the one-body loss rate, the two-body inelastic collision rate constant, and s-wave scattering length, can be extracted by fitting the curves of calculated evolution of the atom number and temperature to experimental data, which help us understand the atomic physics of ultracold strontium. Alternatively, with the aid of the interpolating functions of statistical mechanical quantities and for a given evaporation trajectory, the model can provide evolution curves of some important parameters, such as the trap depth, and the phase space density, which are crucial for us to characterize the evaporation process and optimize the efficiency of cooling. Here, the main body is a paper published in Physical Review A. Additionally, Appendix B describes the calculation of the inelastic and elastic two-body loss rate constants, and Appendix C is detailed checks of calculations of parameters used in the model against various analytic expressions that are valid in appropriate regimes. PHYSICAL REVIEW A 83, 032705 (2011) Numerical modeling of collisional dynamics of Sr in an optical dipole trap M. Yan, R. Chakraborty, A. Mazurenko, P. G. Mickelson, Y. N. Martinez de Escobar, B. J. DeSalvo, and T. C. Killian Rice University, Department of Physics and Astronomy, Houston, Texas 77251, USA (Received 1 April 2010; revised manuscript received 30 January 2011; published 9 March 2011) We describe a model of inelastic and elastic collisional dynamics of atoms in an optical dipole trap that utilizes numerical evaluation of statistical mechanical quantities and numerical solution of equations for the evolution of number and temperature of trapped atoms. It can be used for traps that possess little spatial symmetry and when the ratio of trap depth to sample temperature is relatively small. We compare simulation results with experiments on 88Sr and 84Sr, which have well-characterized collisional properties. DOI: 10.1103/PhysRevA.83.032705 PACS number(s): 34.10.+x, 51.10.+y 0.1% topic match

0.0%

0.8

2002

[181] Bose-Einstein Condensation in Atomic Gases J. Zachorowski and W. Gawlik Acta Physica Polonica A 2002 - 17 citations - Show abstract - Cite 0.0% topic match

0.0%

0.0

2011

[182] Magneto-Optical Trapping of 88Sr atoms with 689 nm Laser Q. Wang 王, ..., and Z. Fang 方 Chinese Physics Letters 2011 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

0.1

2011

[183] A tunable Bose-Einstein condensate for quantum interferometry M. Landini Journal Not Provided 2011 - 2 citations - Show abstract - Cite Abstract: The subject of this thesis is the use of BECs for atom interferometry. The standard way atom interferometry is today performed is by interrogating free falling samples of atoms. The employed samples are cold (but not condensed) to have high coherence, and dilute, not to interact significantly with each other. This technique represents nowadays an almost mature field of research in which the achievable interferometric sensitivity is bounded by the atomic shot noise. Until a few years ago the employment of BECs in such devices was strongly limited by the effect of the interactions between the condensed atoms. This obstacle is today removable exploiting interaction tuning techniques. The use of BECs would be advantageous for atom interferometry inasmuch they represents the matter analogue of the optical laser providing the maximum coherence allowed by quantum mechanics. Moreover, non-linear dynamic can be exploited in order to prepare entangled states of the system. The realization of entangled samples can lead to sub-shot noise sensitivity of the interferometers. At today very nice proof-of-principle experiments have been realized in this direction but a competitive device is still missing. This thesis work is inserted in a long term project whose goal is the realization of such a device. The basic operational idea of the project starts with the preparation of a BEC in a double well potential. By the effect of strong interactions the atomic system can be driven into an entangled state. Once the entangled state is prepared, interactions can be ”switched off” and the interferometric sequence performed. This thesis begins with the description of the apparatus for the production of tunable BECs to be used in the interferometer. We chose to work with 39K atoms because this atomic species presents many convenient Feshabch resonances at easily accessible magnetic field values. The cooling of this particular atomic species presents many difficulties, both for the laser and evaporative cooling processes. For this reason, this was the last alkaline atom to be condensed. Its condensation up to now was only possible by employing sympathetic cooling with another species. In this thesis our solutions to the various cooling issues is reported. In particular we realized sub-Doppler cooling for the first time for this species and we achieved condensation via evaporation in an optical dipole trap taking advantage of a Feshbach resonance. In the last part of this work, are presented original calculations for the effects of thermal fluctuations on the coherence of a BEC in a double well, discussing the interplay between thermal fluctuations and interactions in this system. Estimations and feasibility studies regarding the double well trap to be realized are also reported. 0.0% topic match

0.0%

0.0

1998

[184] Continuous evaporative loading of an atom trap using an optically guided atomic fountain H. J. Davies, ..., and Charles S. Adams Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236) 1998 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

297.9

2007

[185] Many-Body Physics with Ultracold Gases I. Bloch, ..., and W. Zwerger Reviews of Modern Physics 2007 - 5177 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

1.5

2010

[186] Bose-Einstein condensation of Sr 88 through sympathetic cooling with Sr 87 P. Mickelson, ..., and T. Killian Physical Review A 2010 - 21 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.3

2021

[187] Production of 87Rb Bose-Einstein Condensate in an Asymmetric Crossed Optical Dipole Trap Zhu 翥 Ma 马, ..., and C. Lee 李 Chinese Physics Letters 2021 - 1 citations - Show abstract - Cite 0.0% topic match

0.0%

1.5

2010

[188] Simple method for generating Bose-Einstein condensates in a weak hybrid trap M. Zaiser, ..., and E. Rasel Physical Review A 2010 - 20 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.7

2017

[189] Efficient Laser Cooling of 85Rb Atoms to the Recoil Temperature Limit Chang Huang, ..., and Shau-Yu Lan Journal Not Provided 2017 - 5 citations - Show abstract - Cite 0.0% topic match

0.0%

0.0

2003

[190] An optical frequency standard using strontium atoms A. Quessada, ..., and P. Lemonde 2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665) 2003 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

20.5

2012

[191] Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State A. Kaufman, ..., and C. Regal Physical Review X 2012 - 246 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.7

2005

[192] Cavity cooling and spectroscopy of a bound atom-cavity system P. Maunz Journal Not Provided 2005 - 14 citations - Show abstract - Cite 0.0% topic match

0.0%

3.7

2017

[193] Classical light vs. nonclassical light: characterizations and interesting applications A. Pathak and A. Ghatak Journal of Electromagnetic Waves and Applications 2017 - 27 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

38.9

1999

[194] Onset of fermi degeneracy in a trapped atomic Gas B. Demarco and D. Jin Science 1999 - 972 citations - Show abstract - Cite 0.0% topic match

0.0%

0.6

2011

[195] Magneto-Optical Trapping of (88)Sr atoms with 689 nm Laser Wang Qiang, ..., and Fang Zhan-jun Chinese Physics Letters 2011 - 8 citations - Show abstract - Cite 0.0% topic match

0.0%

0.0

2023

[196] Optical pumping of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>5</mml:mn><mml:mi>s</mml:mi><mml:mn>4</mml:mn><mml:msup><mml:mi>d</mml:mi><mml:mn>1</mml:mn></mml:msup><mml:msub><mml:mi>D</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> strontium atoms for l Jens Samland, ..., and B. Pasquiou Physical Review Research 2023 - 0 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.0

2019

[197] Gaseous Bose–Einstein condensates I. Kenyon Quantum 20/20 2019 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

1.5

2001

[198] Three-dimensional cooling of cesium atoms in a reflecting copper cylinder. E. Guillot, ..., and N. Dimarcq Optics letters 2001 - 34 citations - Show abstract - Cite 0.0% topic match

0.0%

0.1

2017

[199] Development of a Strontium Magneto-Optical Trap for Probing Casimir–Polder Potentials Paul Martin Journal Not Provided 2017 - 1 citations - Show abstract - Cite 0.0% topic match

0.0%

1.7

2020

[200] Ultracold Molecules in Optical Arrays: From Laser Cooling to Molecular Collisions L. Anderegg Journal Not Provided 2020 - 8 citations - Show abstract - Cite 0.0% topic match

0.0%

0.0

2017

[201] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

1.4

2022

[202] Degenerate Raman sideband cooling of 40K atoms Elad Zohar, ..., and Y. Sagi https://doi.org/10.1103/PhysRevA.106.063111 2022 - 3 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.0

2023

[203] Thulium Fibre Lasers for Quantum Applications Andrea Pertoldi, ..., and P. Montague 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) 2023 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

2.7

2022

[204] Subrecoil Clock-Transition Laser Cooling Enabling Shallow Optical Lattice Clocks. X. Zhang, ..., and A. Ludlow Physical review letters 2022 - 6 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.0

2017

[205] Quasithermalization of fermions in a quadrupole potential and evaporative cooling of 40K to quantum degeneracy Mihail Rabinovic Journal Not Provided 2017 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

26.8

2018

[206] Laser cooling of optically trapped molecules L. Anderegg, ..., and J. Doyle Nature Physics 2018 - 174 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.0

2017

[207] UvA-DARE (Digital Academic Repository) Steady-State Magneto-Optical Trap with 100-Fold Improved Phase-Space Density S. Bennetts, ..., and B. Pasquiou Journal Not Provided 2017 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

1.4

2004

[208] Extra-heating mechanism in Doppler cooling experiments T. Chanelière, ..., and D. Wilkowski Journal of The Optical Society of America B-optical Physics 2004 - 28 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.3

2001

[209] Preparation of a degenerate, two-component Fermi gas by evaporation in a single beam optical trap Granade, ..., and Thomas Quantum Electronics and Laser Science Conference 2001 - 7 citations - Show abstract - Cite 0.0% topic match

0.0%

30.6

2002

[210] Nobel Lecture: Bose-Einstein condensation in a dilute gas, the first 70 years and some recent experiments E. Cornell and C. Wieman Reviews of Modern Physics 2002 - 675 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

1.2

2023

[211] Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates Cebrail Pür, ..., and C. Klempt Physical Review A 2023 - 2 citations - Show abstract - Cite - PDF 0.0% topic match

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0.1

2002

[212] GROUND STATE LASER COOLING OF TRAPPED ATOMS USING ELECTROMAGNETICALLY INDUCED TRANSPARENCY J. Eschner, ..., and R. Blatt https://doi.org/10.1142/9789812778307_0041 2002 - 2 citations - Show abstract - Cite 0.0% topic match

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0.0

2017

[213] Deep laser cooling in optical trap: two-level quantum model O. Prudnikov arXiv: Atomic Physics 2017 - 0 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

0.0

2020

[214] Many-body feedback cooling Markus Kaczvinszki https://doi.org/10.34726/HSS.2020.82731 2020 - 0 citations - Show abstract - Cite 0.0% topic match

0.0%

0.0

2024

[215] All-optical production of Bose-Einstein condensates with 2 Hz repetition rate Mareike Hetzel, ..., and Carsten Klempt Journal Not Provided 2024 - 0 citations - Show abstract - Cite - PDF 0.0% topic match

0.0%

2.4

2017

[216] A quantum degenerate Bose–Fermi mixture of 41K and 6Li Yu-Ping Wu, ..., and Jian-Wei Pan Journal of Physics B: Atomic, Molecular and Optical Physics 2017 - 18 citations - Show abstract - Cite - PDF 0.0% topic match

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194.4

1995

[217] Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor M. Anderson, ..., and E. Cornell Science 1995 - 5666 citations - Show abstract - Cite - PDF 0.0% topic match

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0.2

2018

[218] Probing ultracold ytterbium in optical lattices with resonant light: from coherent control to dissipative dynamics R. Bouganne Journal Not Provided 2018 - 1 citations - Show abstract - Cite 0.0% topic match

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0.0

2018

[219] Nonlinear behaviour of ultracold atoms in optical dipole traps : large atomic light shifts, a quantum phase transition, and interaction-dependent dynamics S. Coop https://doi.org/10.5821/dissertation-2117-122698 2018 - 0 citations - Show abstract - Cite - PDF Abstract: This thesis reports on theory and results from two experiments related to nonlinear behaviour in ensembles of optically-trapped ultracold atoms. The first experiment, performed at ICFO in Barcelona, regards the prediction and measurement of strong ac Stark shifts (light shifts). We present a numerical method based on Floquet's theorem for calculating light shifts to all orders with fewer approximations than the usual calculation based on second-order perturbation theory. The method is experimentally validated by performing absorption spectroscopy of a optically-trapped cloud of cold 87Rb atoms in three scenarios. 1) The atoms are trapped in a singly-polarised monochromatic dipole trap with a wavelength detuned aprox 30nm from the nearest atomic transition. 2) A bichromatic two-polarisation trap, where one wavelength is much closer to atomic transitions (aprox 0:01nm detuning), and finally 3) Another monochromatic trap but with the wavelength variable and scanned close to atomic transitions, again with aprox 0:01nm detuning but three times the intensity of the near-resonant light in the previous experiment, producing nonlinear light shifts of the D2 transition upto aprox 1 GHz. We discuss the potential application of the method to the accuratemeasurement of electric dipole transition matrix elements. The method is extendedto calculate atomic energy level shifts in the presence of light and staticmagnetic fields. The second experiment was performed at LENS in Florence, and involves 39K atoms with tunable interactions cooled into the ground- and first-excited state of a two-mode optical potential. We derive a diferential equation to describe behaviour of a two-mode quantum system with tunable interactions, and then solve it to model behaviour of the system in the three distinct regimes of attractive, zero, and repulsive interatomic interactions. With attractive interactions the system is shown to exhibit a quantum phase transition, and with repulsive interactions is shown to exhibit nonlinear dynamics, including behaviour analogous to a superconducting Josephson junction. As background material the thesis presents a summary of standard laser cooling and trapping echniques, namely Doppler cooling, o+ o- polarisation gradient cooling, magneto-optical trapping, and optical trapping. Optical traps are discussed in detail. We discuss relevant basic physics, derive and analyse a technique for using light shifts to characterise an optical trap, discuss optical Bose-Einstein condensation and control of light intensity to reduce noise-induced heating. Also described is a theoretical proposal for optical evaporation with a constant-depth trap. Esta tesis describe la investigación teórica y los resultados de dos experimentos relacionados con el comportamiento no lineal en un conjuntos de áatomos ultrafríos atrapados ópticamente. En el primer experimento, realizado en ICFO en Barcelona, se presenta la predicción y unos resultados de fuertes cambios de ac Stark (light shifts). Se explica un método numérico basado en el teorema de Floquet para calcular light shifts a todos órdenes con menos aproximaciones que el método habitualmente usado basado en teoría de perturbaciones de segundo orden. El método se valida experimentalmente mediante la realización de espectroscopía de absorción en una nube de átomos de 87Rb ópticamente atrapados en tres escenarios distintos. En el primero, los átomos están atrapados en una trampa de dipolo monocromática de polarización única con una longitud de onda desintonizada 30nm a la transición atómica más cercana. En el segundo se emplea una trampa bicromática de dos polarizaciones, donde una longitud de onda está mucho más cerca de las transiciones atámicas (0.01nm fuera de resonancia). En el tercer y ultimo escenario, se usa una trampa monocromática con la longitud de onda variable y escaneado cerca de transiciones atómicas, nuevamente con 0.01nm desintonizada pero tres veces más intensa que la luz casi resonante del experimento anterior, produciendo light shifts no lineales de la transición D2 hasta 1 GHz. Se discute la aplicabilidad del método para la medición precisa de los elementos de la matriz de transición dipolar eléctrica. Por último, el método se extiende permitiendo calcular los cambios de niveles de energía atómica en presencia de luz y campos magnéticos estáticos. El segundo experimento que se describe en esta tesis se realizó en LENS, en Florencia, e involucra átomos de 39K con interacciones sintonizables en átomos fríos ocupando al estado fundamental y el primer estado excitado de un potencial óptico de dos modos. Se deriva una ecuación diferencial para describir el comportamiento de un sistema cuántico de dos modos con nteracciones sintonizables. Esta se resuelve para modelar el comportamiento del sistema en tres regímenes distintos de interacciones inter-atómicas: atractivas, nulas y repulsivas. En el caso de interacciones atractivas se muestra que el sistema exhibe una transición de fase cuántica. En presencia de interacciones repulsivas el sistema muestra dinámica no lineal, incluyendo un comportamiento análogo a una unión superconductora de Josephson. Como material de referencia, la tesis presenta un resumen de las técnicas estándar de enfriamiento y atrapamiento láser, concretamente enfriamiento Doppler, enfriamiento por gradiente de polarización, atrapamiento magneto-óptico y atrapamiento óptico. Las trampas ópticas se revisan en detalle. Discutimos la física básica relevante, derivamos y analizamos una técnica para usar los light shift para caracterizar una trampa óptica. Analizamos la condensación óptica de Bose-Einstein y el control de la intensidad de la luz para reducir el calentamiento inducido por el ruido. También se presenta una propuesta teórica para la evaporación óptica con una trampa de profundidad constante. 0.0% topic match

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0.0

2005

[220] Atomic quantum systems in optical micro-structures T Müther, ..., and J Jahns Journal of Physics: Conference Series 2005 - 0 citations - Show abstract - Cite - PDF 0.0% topic match

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