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.
- Received 26 October 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.030401
©2010 American Physical Society
Viewpoint
Sorting superfluidity from Bose-Einstein condensation in atomic gases
Published 19 January 2010
With the right configuration of laser beams, researchers could measure how much of an ultracold atomic gas is actually superfluid.
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