Vortex gyroscope imaging of planar superfluids
arXiv:1405.4352 · doi:10.1103/PhysRevLett.113.165303
Abstract
We propose a robust imaging technique that makes it possible to distinguish vortices from antivortices in quasi-two-dimensional Bose--Einstein condensates from a single image of the density of the atoms. Tilting the planar condensate prior to standard absorption imaging excites a generalized gyroscopic mode of the condensate revealing the sign and location of each vortex. This technique is anticipated to enable experimental measurement of the incompressible kinetic energy spectrum of the condensate and the observation of a negative temperature phase transition of the vortex gas, driven by two-dimensional superfluid turbulence.
10 pages, 8 figures
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Cited by in corpus (16)
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