Evaporative cooling of cold atoms at surfaces
Evaporative cooling of cold atoms at surfaces
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DOI：
10.1103/physreva.90.023614
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发表时间：
2014-05
影响因子：
2.9
通讯作者：
J. Markle;A. J. Allen;P. Federsel;B. Jetter;A. Gunther;J. Fort'agh;N. Proukakis;T. Judd
中科院分区：
文献类型：
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作者：
J. Markle;A. J. Allen;P. Federsel;B. Jetter;A. Gunther;J. Fort'agh;N. Proukakis;T. Judd
我们从理论上研究了冷原子靠近固体表面时的蒸发冷却。通过耦合凝聚态的耗散Gross-Pitaevskii方程和热云的量子Boltzmann描述(Zaremba-Nikuni-Griffin方法)，描述了原子云的动力学。我们还进行了实验，以便与该模型进行详细的比较，并发现如果包括热云的全部碰撞动力学，它可以捕捉到该系统的关键物理。此外，我们还建议如何优化表面冷却，以获得最纯净和最大的冷凝液。
We theoretically investigate the evaporative cooling of cold rubidium atoms that are brought close to a solid surface. The dynamics of the atom cloud are described by coupling a dissipative Gross-Pitaevskii equation for the condensate with a quantum Boltzmann description of the thermal cloud (the Zaremba-Nikuni-Griffin method). We have also performed experiments to allow for a detailed comparison with this model and find that it can capture the key physics of this system provided the full collisional dynamics of the thermal cloud are included. In addition, we suggest how to optimize surface cooling to obtain the purest and largest condensates.