2010/06/30 by Pekko Kuopanportti, Mikko Möttönen · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #cond-mat.quant-gas
paper · pdf · doi:10.1007/s10909-010-0216-1
published as J. Low Temp. Phys. 161, 561 (2010) · 8 pages, 6 figures; to be published in J. Low Temp. Phys., online publication available at http://dx.doi.org/10.1007/s10909-010-0216-1
openalex publication_date 2010/09/10 · crossref created 2010/09/10 · crossref issued 2010/09/11 · crossref published 2010/09/11 · crossref published-online 2010/09/11 · arxiv created 2010/09/30 · arxiv updated 2010/11/09 · crossref published-print 2010/12/01 · openalex created_date 2016/06/24 · crossref deposited 2019/06/02 · crossref indexed 2026/07/24 · openalex updated_date 2026/07/28
Recently, it was shown that giant vortices with arbitrarily large quantum numbers can possibly be 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.