Shaking-induced cooling of cold atoms in a magnetic trap
Shaking-induced cooling of cold atoms in a magnetic trap
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DOI：
10.1103/physreva.68.021401
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发表时间：
2003-08
影响因子：
2.9
通讯作者：
M. Kumakura;Y. Shirahata;Y. Takasu;Y. Takahashi;T. Yabuzaki
中科院分区：
文献类型：
--
作者：
M. Kumakura;Y. Shirahata;Y. Takasu;Y. Takahashi;T. Yabuzaki
通过在空间上振动磁阱，被捕获的冷Rb原子被加热或进一步冷却，这取决于振动频率。原子温度随振荡频率的变化呈现出色散型共振，这是由于陷阱势的非谐性引起的频率选择性能量吸收引起的。高能原子的选择性加热增加了它们的损失，这可能导致被困原子云的冷却而不是加热。
By shaking a magnetic trap spatially, trapped cold Rb atoms are either heated or further cooled, depending on the shaking frequency. The atom temperature as a function of shaking frequency exhibits a dispersion-shaped resonance, which is caused by frequency selective energy absorption due to the anharmonicity of the trap potential. Selective heating of high-energy atoms enhances their loss, which can result in cooling rather than heating of a trapped atomic cloud.