Vortex-pair states in spin-orbit-coupled Bose-Einstein condensates with coherent coupling
Vortex-pair states in spin-orbit-coupled Bose-Einstein condensates with coherent coupling
复制标题
具有相干耦合的自旋轨道耦合玻色-爱因斯坦凝聚中的涡旋对态
DOI：
10.1007/s11467-018-0821-z
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发表时间：
2018
影响因子：
7.5
通讯作者：
Shi-Jie Yang
中科院分区：
文献类型：
--
作者：
Yong-Kai Liu;Hong-Xia Yue;Liang-Liang Xu;Shi-Jie Yang
在不同类型的自旋轨道耦合的双组分玻色-爱因斯坦凝聚体（BEC）中发现了三种类型的涡旋对。一种类型将两个涡流保持在双组分冷凝物的一个组分中。另外两种类型在双组分凝聚体的每个组分中都持有一个涡旋，并分别表现出具有零或单位拓扑电荷的半子对纹理。两个涡旋的核心通过相对相位跳变的串连接。通过将不同的非阿贝尔规范场合并到 BEC 中，可以从无涡波包生成这些涡旋对。当引入拉比耦合时，两个核心之间的距离由拉比耦合强度有效控制，并且观察到涡旋构型的转变。
Three types of vortex-pair are identified in two-component Bose–Einstein condensates (BEC) of different kinds of spin-orbit coupling. One type holds the two vortices in one component of the twocomponent condensates. Both the other two types hold a vortex in each component of the twocomponent condensates, and exhibit meron-pair textures that have either null or unit topological charge, respectively. The cores of the two vortices are connected by a string of the relative phase jump. These vortex pairs can be generated from a vortex-free wave packet by incorporating different non- Abelian gauge field into the BEC. When a Rabi coupling is introduced, the distance between the two cores is effectively controlled by the Rabi coupling strength and a transition of vortex configurations is observed.