Expansion of 1D Polarized Superfluids: The Fulde-Ferrell-Larkin-Ovchinnikov State Reveals Itself

Hong Lu, L. O. Baksmaty, C. J. Bolech, and Han Pu
Phys. Rev. Lett. 108, 225302 – Published 29 May 2012
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Abstract

We study the expansion dynamics of a one-dimensional polarized Fermi gas after its sudden release from confinement using both the mean-field Bogoliubov–de Gennes and the numerically unbiased time-evolving block decimation methods. Our results show that experimentally observable spin density modulations, directly related to the presence of a Fulde-Ferrell-Larkin-Ovchinnikov state, develop during the expansion of the cloud. Our work therefore provides a robust theoretical proposal for the detection of this long-sought state.

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  • Received 17 February 2012

DOI:https://doi.org/10.1103/PhysRevLett.108.225302

© 2012 American Physical Society

Authors & Affiliations

Hong Lu1, L. O. Baksmaty1, C. J. Bolech2,1, and Han Pu1

  • 1Department of Physics and Astronomy, Rice University, 6100 Main Street, MS-61, Houston, Texas 77005, USA
  • 2Department of Physics, University of Cincinnati, 345 Clifton Court, ML-11, Cincinnati, Ohio 45221, USA

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Issue

Vol. 108, Iss. 22 — 1 June 2012

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