arXiv:0910.4767 · Physical Review Letters

Measuring the Superfluid Fraction of an Ultracold Atomic Gas

Nigel R. Cooper, Zoran Hadzibabic

Published Jan 19, 2010• 71 citations

Abstract

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.

DOI: 10.1103/physrevlett.104.030401

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