Measuring the condensate fraction of rapidly rotating trapped boson systems: off-diagonal order from the density profile |
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Authors: | Sinova Jairo Hanna C B MacDonald A H |
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Institution: | Department of Physics, University of Texas at Austin, Austin, Texas 78712-1081, USA. |
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Abstract: | We demonstrate a direct connection between the density profile of a system of ultracold trapped bosonic particles in the rapid-rotation limit and its condensate fraction. This connection can be used to probe the crossover from condensed vortex-lattice states to uncondensed quantum-fluid states that occurs in rapidly rotating boson systems as the particle density decreases or the rotation frequency increases. We illustrate our proposal with a series of examples, including ones based on models of realistic finite trap systems, and comment on its application to freely expanding boson density profile measurements. |
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