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Measuring the Superfluid Fraction of an Ultracold Atomic Gas
classification
cond-mat.quant-gas
keywords
atomicfractionsuperfluidangularmethodmomentumallowsbeams
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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 non-zero angular momentum 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.
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