Supersonic optical tunnels for Bose-Einstein condensates
其他凝聚态物理
2009-11-11 v3
摘要
We propose a method for the stabilisation of a stack of parallel vortex rings in a Bose-Einstein condensate. The method makes use of a hollow laser beam containing an optical vortex. Using realistic experimental parameters we demonstrate numerically that our method can stabilise up to 9 vortex rings. Furthermore we point out that the condensate flow through the tunnel formed by the core of the optical vortex can be made supersonic by inserting a laser-generated hump potential. We show that long-living immobile condensate solitons generated in the tunnel exhibit sonic horizons. Finally, we discuss prospects of using these solitons for analogue gravity experiments.
关键词
引用
@article{arxiv.cond-mat/0602108,
title = {Supersonic optical tunnels for Bose-Einstein condensates},
author = {S. Wuester and B. J. Dabrowska-Wuester},
journal= {arXiv preprint arXiv:cond-mat/0602108},
year = {2009}
}
备注
14 pages, 3 figures, published version