Measuring the Superfluid Fraction of an Ultracold Atomic Gas
Measuring the Superfluid Fraction of an Ultracold Atomic Gas
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DOI：
10.1103/physrevlett.104.030401
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发表时间：
2010-01-22
影响因子：
8.6
通讯作者：
Hadzibabic, Zoran
中科院分区：
文献类型：
--
作者：
Cooper, Nigel R.;Hadzibabic, Zoran
我们提出了一种测量原子气体超流分数的方法。该方法使用具有非零角动量的光束产生的矢量势来模拟均匀旋转。原子气体角动量的诱导变化可以用光谱学测量。这使得可以直接测定超流体的分数。
We propose a method to measure the superfluid fraction of an atomic gas. The method involves the use of a vector potential generated by optical beams with nonzero angular momenta to simulate uniform rotation. The induced change in angular momentum of the atomic gas can be measured spectroscopically. This allows a direct determination of the superfluid fraction.