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Frontiers of Physics

, 13:130316 | Cite as

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

  • Yong-Kai Liu
  • Hong-Xia Yue
  • Liang-Liang Xu
  • Shi-Jie Yang
Research article
  • 17 Downloads

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 

Notes

Acknowledgements

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 Scientists of Shanxi Province, China (Grant No. 201601D202012).

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Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Physics and Information EngineeringShanxi Normal UniversityLinfenChina
  2. 2.Department of PhysicsBeijing Normal UniversityBeijingChina

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