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arXiv 0905.2694nlin.PS
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局域杂质对玻色-爱因斯坦凝聚体中涡旋的操纵

Manipulation of Vortices by Localized Impurities in Bose-Einstein Condensates

M. C. Davis, R Carretero-González, Z. Shi, K. J. H. Law, P. G. Kevrekidis, B. P. Anderson

摘要:

本文研究了聚焦激光产生的光学势对玻色-爱因斯坦凝聚体涡旋的操纵。结果表明,适当选择激光强度和宽度,可以成功地将涡旋输运到囚禁凝聚态原子的阱内的各个位置。此外,完整的分歧结构可能的稳态单电荷涡旋解决方案的谐波势与这种类型的杂质阐明。当一个移动的旋涡被捕获的情况下,一个固定的激光束也进行了研究,以及通过周期性的光晶格拖动旋涡的可能性。

英文摘要:

We consider the manipulation of Bose-Einstein condensate vortices by optical potentials generated by focused laser beams. It is shown that for appropriate choices of the laser strength and width it is possible to successfully transport vortices to various positions inside the trap confining the condensate atoms. Furthermore, the full bifurcation structure of possible stationary single-charge vortex solutions in a harmonic potential with this type of impurity is elucidated. The case when a moving vortex is captured by a stationary laser beam is also studied, as well as the possibility of dragging the vortex by means of periodic optical lattices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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