Generating a picokelvin ultracold atomic ensemble in microgravity
Generating a picokelvin ultracold atomic ensemble in microgravity
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DOI：
10.1088/0953-4075/46/19/195302
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发表时间：
2013-09
期刊：
影响因子：
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通讯作者：
Lu Wang;Peng Zhang;Xuzong Chen;Zhaoyuan Ma
中科院分区：
文献类型：
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作者：
Lu Wang;Peng Zhang;Xuzong Chen;Zhaoyuan Ma
应用直接蒙特卡罗模拟（DSMC）方法，研究了倾斜光偶极阱中存在磁场梯度诱导的过悬浮和仅存在引力时的蒸发冷却过程.我们提出了微重力环境中的两阶段分解蒸发冷却过程，并建议量子简并可以获得在几个picokelvin与几千个原子。
Applying the direct Monte Carlo simulation (DSMC) method developed for a cold atom system, we study the evaporative cooling process in tilted optical dipole traps with a magnetic field gradient-induced over-levitation or merely a gravitational force. We propose a two-stage decomposed evaporative cooling process in a microgravity environment, and suggest that quantum degeneracy can be obtained at a few picokelvins with several thousand atoms.