The European Physical Journal Special Topics

, Volume 224, Issue 3, pp 577–583 | Cite as

Solitonic vortices in Bose–Einstein condensates

  • M. Tylutki
  • S. Donadello
  • S. Serafini
  • L. P. Pitaevskii
  • F. Dalfovo
  • G. Lamporesi
  • G. Ferrari
Regular Article
Part of the following topical collections:
  1. Novel Quantum Phases and Mesoscopic Physics in Quantum Gases

Abstract

We analyse, theoretically and experimentally, the nature of solitonic vortices (SV) in an elongated Bose-Einstein condensate. In the experiment, such defects are created via the Kibble-Zurek mechanism, when the temperature of a gas of sodium atoms is quenched across the BEC transition, and are imaged after a free expansion of the condensate. By using the Gross-Pitaevskii equation, we calculate the in-trap density and phase distributions characterizing a SV in the crossover from an elongated quasi-1D to a bulk 3D regime. The simulations show that the free expansion strongly amplifies the key features of a SV and produces a remarkable twist of the solitonic plane due to the quantized vorticity associated with the defect. Good agreement is found between simulations and experiments.

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Copyright information

© EDP Sciences and Springer 2015

Authors and Affiliations

  • M. Tylutki
    • 1
  • S. Donadello
    • 1
  • S. Serafini
    • 1
  • L. P. Pitaevskii
    • 1
    • 2
  • F. Dalfovo
    • 1
  • G. Lamporesi
    • 1
  • G. Ferrari
    • 1
  1. 1.INO-CNR BEC Center and Dipartimento di FisicaUniversità di TrentoPovoItaly
  2. 2.Kapitza Institute for Physical Problems RASMoscowRussia

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