Journal of Low Temperature Physics

, Volume 161, Issue 5–6, pp 561–573 | Cite as

Stabilization and Pumping of Giant Vortices in Dilute Bose–Einstein Condensates

Article

Abstract

Recently, it was shown that giant vortices with arbitrarily large quantum numbers can possibly created in dilute Bose–Einstein condensates by cyclically pumping vorticity into the condensate. However, multiply quantized vortices are typically dynamically unstable in harmonically trapped nonrotated condensates, which poses a serious challenge to the vortex pump procedure. In this theoretical study, we investigate how the giant vortices can be stabilized by the application of a Gaussian potential peak along the vortex core. We find that achieving dynamical stability is feasible up to high quantum numbers. To demonstrate the efficiency of the stabilization method, we simulate the adiabatic creation of an unsplit 20-quantum vortex with the vortex pump.

Keywords

Bose–Einstein condensation Vortex Dynamical instability Optical plug 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Applied Physics/COMPAalto UniversityAaltoFinland
  2. 2.Low Temperature LaboratoryAalto UniversityAaltoFinland

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