Trapping cold atoms near carbon nanotubes: thermal spin flips and Casimir-Polder potential
Trapping cold atoms near carbon nanotubes: thermal spin flips and Casimir-Polder potential
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在碳纳米管附近捕获冷原子：热自旋翻转和卡西米尔-波尔德势
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Knight
中科院分区：
文献类型：
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作者：
R. Fermani;S. Scheel;P. Knight
我们研究了在金属碳纳米管的外部附近捕获超冷{sup 87}Rb原子的可能性，我们设想将其用作小型化的载流导线。我们计算了原子自旋翻转寿命，并比较了Casimir-Polder势与磁囚禁势的强度。我们的分析表明，Casimir-Polder力是主要的损失机制，我们计算的最小距离的碳纳米管，原子可以被捕获到大于100 nm。
We investigate the possibility of trapping ultracold {sup 87}Rb atoms near the outside of a metallic carbon nanotube, which we imagine using as a miniaturized current-carrying wire. We calculate atomic spin-flip lifetimes and compare the strength of the Casimir-Polder potential with the magnetic trapping potential. Our analysis indicates that the Casimir-Polder force is the dominant loss mechanism, and we compute the minimum distance to the carbon nanotube at which the atoms can be trapped to be larger than 100 nm.