Quench-Induced Supercurrents in an Annular Bose Gas

L. Corman, L. Chomaz, T. Bienaimé, R. Desbuquois, C. Weitenberg, S. Nascimbène, J. Dalibard, and J. Beugnon
Phys. Rev. Lett. 113, 135302 – Published 26 September 2014
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Abstract

We create supercurrents in annular two-dimensional Bose gases through a temperature quench of the normal-to-superfluid phase transition. We detect the magnitude and the direction of these supercurrents by measuring spiral patterns resulting from the interference of the cloud with a central reference disk. These measurements demonstrate the stochastic nature of the supercurrents. We further measure their distribution for different quench times and compare it with predictions based on the Kibble-Zurek mechanism.

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  • Received 16 June 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.135302

© 2014 American Physical Society

Authors & Affiliations

L. Corman1, L. Chomaz1,4, T. Bienaimé1, R. Desbuquois2, C. Weitenberg3, S. Nascimbène1, J. Dalibard1,4, and J. Beugnon1,*

  • 1Laboratoire Kastler Brossel, CNRS, UPMC, ENS, Collège de France, 24 Rue Lhomond, 75231 Paris Cedex 05, France
  • 2Institut für Quantenelektronics, ETH Zurich, 8093 Zurich, Switzerland
  • 3Institut für Laserphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany
  • 4Collège de France, 11 Place Marcelin Berthelot, 75005 Paris, France

  • *beugnon@lkb.ens.fr

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Issue

Vol. 113, Iss. 13 — 26 September 2014

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