Vortex Gyroscope Imaging of Planar Superfluids

A. T. Powis, S. J. Sammut, and T. P. Simula
Phys. Rev. Lett. 113, 165303 – Published 17 October 2014
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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.

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  • Received 17 May 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.165303

© 2014 American Physical Society

Authors & Affiliations

A. T. Powis, S. J. Sammut, and T. P. Simula

  • School of Physics, Monash University, Victoria 3800, Australia

See Also

Emergence of Order from Turbulence in an Isolated Planar Superfluid

Tapio Simula, Matthew J. Davis, and Kristian Helmerson
Phys. Rev. Lett. 113, 165302 (2014)

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Vol. 113, Iss. 16 — 17 October 2014

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