Generating and Manipulating Quantized Vortices On-Demand in a Bose-Einstein Condensate: a Numerical Study
Generating and Manipulating Quantized Vortices On-Demand in a Bose-Einstein Condensate: a Numerical Study
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在玻色-爱因斯坦凝聚态中按需生成和操纵量子化涡旋：一项数值研究
DOI：
10.1103/physreva.93.023604
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发表时间：
2015
影响因子：
2.9
通讯作者：
Brian P. Anderson
中科院分区：
文献类型：
--
作者：
Bettina Gertjerenken;P. Kevrekidis;P. Kevrekidis;R. Carretero;Brian P. Anderson
我们数值研究了一种实验上可行的方法，用于在高度扁扁原子玻色-爱因斯坦凝聚体（BEC）中按需产生和操纵多个涡旋，以初始化复杂的涡旋分布，用于涡旋动力学的研究。该方法利用移动的激光束来产生、捕获和运输BEC内部和外部的涡流。我们详细研究了这种方法，并显示了广泛的参数范围的适用性的原型两个涡的情况下，以及生产和操纵几个涡的情况下，没有净流通，对应于相同数量的正和负的循环涡，和情况下，有一个净流通量的例子。我们发现，耗散的存在可以帮助稳定钉扎的旋涡在各自的激光束钉扎网站。最后，我们说明了如何利用激光束作为存储库，持有大量的漩涡，以及如何存款个人的漩涡在一个顺序的方式在存储库中，以构建超流体流的存储库光束与几个量子的流通。
We numerically investigate an experimentally viable method for generating and manipulating on-demand several vortices in a highly oblate atomic Bose-Einstein condensate (BEC) in order to initialize complex vortex distributions for studies of vortex dynamics. The method utilizes moving laser beams to generate, capture, and transport vortices inside and outside the BEC. We examine in detail this methodology and show a wide parameter range of applicability for the prototypical two-vortex case, as well as case examples of producing and manipulating several vortices for which there is no net circulation, corresponding to equal numbers of positive and negative circulation vortices, and cases for which there is one net quantum of circulation. We find that the presence of dissipation can help stabilize the pinning of the vortices on their respective laser beam pinning sites. Finally, we illustrate how to utilize laser beams as repositories that hold large numbers of vortices and how to deposit individual vortices in a sequential fashion in the repositories in order to construct superfluid flows about the repository beams with several quanta of circulation.
影响因子：
2.9
作者：
S. P. Cockburn;H. Nistazakis;T. Horikis;P. Kevrekidis;N. Proukakis;D. Frantzeskakis
通讯作者：
S. P. Cockburn;H. Nistazakis;T. Horikis;P. Kevrekidis;N. Proukakis;D. Frantzeskakis
DOI：
10.1142/p817
发表时间：
2013-04
期刊：
--
影响因子：
--
作者：
N. Proukakis;S. Gardiner;Matthew J. Davis;M. Szymańska
通讯作者：
N. Proukakis;S. Gardiner;Matthew J. Davis;M. Szymańska