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

doi:10.1007/s11467-018-0821-z

Front. Phys.

2018, Vol. 13

Issue (5) : 130316 https://doi.org/10.1007/s11467-018-0821-z

RESEARCH ARTICLE

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

Yong-Kai Liu¹(

), Hong-Xia Yue¹, Liang-Liang Xu², Shi-Jie Yang²(

)

¹. College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China
². Department of Physics, Beijing Normal University, Beijing 100875, China

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Abstract

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.

Keywords Bose–Einstein condensates spin-orbit coupling vortex-pair states

Corresponding Author(s): Yong-Kai Liu,Shi-Jie Yang

Issue Date: 06 August 2018

Cite this article:

Yong-Kai Liu,Hong-Xia Yue,Liang-Liang Xu, et al. Vortex-pair states in spin-orbit-coupled Bose–Einstein condensates with coherent coupling[J]. Front. Phys. , 2018, 13(5): 130316.

URL:

https://academic.hep.com.cn/fop/EN/10.1007/s11467-018-0821-z
https://academic.hep.com.cn/fop/EN/Y2018/V13/I5/130316

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