Stable fractional vortices in the cyclic states of Bose-Einstein condensates
Stable fractional vortices in the cyclic states of Bose-Einstein condensates
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DOI：
10.1103/physreva.80.051601
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发表时间：
2009-10
影响因子：
2.9
通讯作者：
J. Huhtamaki;T. Simula;M. Kobayashi;K. Machida
中科院分区：
文献类型：
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作者：
J. Huhtamaki;T. Simula;M. Kobayashi;K. Machida
我们提出了在F = 2旋量玻色-爱因斯坦凝聚体的循环态中通过使用脉冲微波和激光场操纵其内部自旋结构来创建分数涡旋的方法。这种涡的稳定性研究作为一个功能的旋转频率的限制谐波陷阱在煎饼和雪茄形冷凝。我们发现一个范围内的参数，所谓的1/3涡旋状态是积极有利的。这样的分数涡可以创建在87 Rb原子的凝聚体使用当前的实验技术，促进探测的拓扑缺陷与非阿贝尔统计。
We propose methods to create fractional vortices in the cyclic state of an F = 2 spinor Bose-Einstein condensate by manipulating its internal spin structure using pulsed microwave and laser fields. The stability of such vortices is studied as a function of the rotation frequency of the confining harmonic trap both in pancake and cigar shaped condensates. We find a range of parameters for which the so-called 1/3-vortex state is energetically favorable. Such fractional vortices could be created in condensates of 87Rb atoms using current experimental techniques facilitating probing of topological defects with non-Abelian statistics.