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

被引：0
作者：
Pekko Kuopanportti
Mikko Möttönen
机构：
[1] Aalto University,Department of Applied Physics/COMP
[2] Aalto University,Low Temperature Laboratory
来源：
Journal of Low Temperature Physics | 2010年 / 161卷
关键词：
Bose–Einstein condensation; Vortex; Dynamical instability; Optical plug;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：561 / 573
页数：12
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