Vortex-pair states in spin-orbit-coupled Bose-Einstein condensates with coherent coupling  

作　　者：Yong-Kai Liu Hong-Xia Yue Liang-Liang Xu Shi-Jie Yang 

机构地区：[1]College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China [2]Department of Physics, Beijing Normal University, Beijing 100875, China

出　　处：《Frontiers of physics》2018年第5期295-301,共7页物理学前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China under Grant Nos. 11604193 and 11774034, and the Natural Science Foundation for Young Sci- entists of Shanxi Province, China （Grant No. 201601D202012）.

摘　　要：Three types of vortex-pair are identified in two-component Bose-Einstein condensates （BEC） of dif- ferent kinds of spin-orbit coupling. One type holds the two vortices in one component of the two- component condensates. Both the other two types hold a vortex in each component of the two- component 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.Three types of vortex-pair are identified in two-component Bose-Einstein condensates （BEC） of dif- ferent kinds of spin-orbit coupling. One type holds the two vortices in one component of the two- component condensates. Both the other two types hold a vortex in each component of the two- component 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.

关 键 词：Bose-Einstein condensates spin-orbit coupling vortex-pair states 

分 类 号：O412.1[理学—理论物理] TN946.7[理学—物理]