Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential

doi:10.1088/1674-1056/ac538d

中国物理B ›› 2022, Vol. 31 ›› Issue (7): 70305-070305.doi: 10.1088/1674-1056/ac538d

Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential

Huan Zhang(张欢), Sheng Liu(刘胜), and Yongsheng Zhang(张永生)^†

CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China

收稿日期:2021-10-18 修回日期:2022-01-27 接受日期:2022-02-10 出版日期:2022-06-09 发布日期:2022-06-13
通讯作者: Yongsheng Zhang E-mail:yshzhang@ustc.edu.cn
基金资助:
Y. S. Zhang thanks Professor Chuanwei Zhang for drawing our attention to the topic of Anderson localization of BECs. This work was supported by the National Natural Science Foundation of China (Grant No. 92065113) and the National Key R&D Program. The calculation on GPU was performed on the supercomputing system in the Supercomputing Center of University of Science and Technology of China.

Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential

Huan Zhang(张欢), Sheng Liu(刘胜), and Yongsheng Zhang(张永生)^†

CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China

Received:2021-10-18 Revised:2022-01-27 Accepted:2022-02-10 Online:2022-06-09 Published:2022-06-13
Contact: Yongsheng Zhang E-mail:yshzhang@ustc.edu.cn
Supported by:
Y. S. Zhang thanks Professor Chuanwei Zhang for drawing our attention to the topic of Anderson localization of BECs. This work was supported by the National Natural Science Foundation of China (Grant No. 92065113) and the National Key R&D Program. The calculation on GPU was performed on the supercomputing system in the Supercomputing Center of University of Science and Technology of China.

摘要/Abstract

摘要： We present numerical results of a one-dimensional spin-orbit coupled Bose-Einstein condensate expanding in a speckle disorder potential by employing the Gross-Pitaevskii equation. Localization properties of a spin-orbit coupled Bose-Einstein condensate in zero-momentum phase, magnetic phase and stripe phase are studied. It is found that the localizing behavior in the zero-momentum phase is similar to the normal Bose-Einstein condensate. Moreover, in both magnetic phase and stripe phase, the localization length changes non-monotonically as the fitting interval increases. In magnetic phases, the Bose-Einstein condensate will experience spin relaxation in disorder potential.

关键词: Bose-Einstein condensates, Anderson localization, spin-orbit coupling

Abstract: We present numerical results of a one-dimensional spin-orbit coupled Bose-Einstein condensate expanding in a speckle disorder potential by employing the Gross-Pitaevskii equation. Localization properties of a spin-orbit coupled Bose-Einstein condensate in zero-momentum phase, magnetic phase and stripe phase are studied. It is found that the localizing behavior in the zero-momentum phase is similar to the normal Bose-Einstein condensate. Moreover, in both magnetic phase and stripe phase, the localization length changes non-monotonically as the fitting interval increases. In magnetic phases, the Bose-Einstein condensate will experience spin relaxation in disorder potential.

Key words: Bose-Einstein condensates, Anderson localization, spin-orbit coupling

中图分类号: (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

03.75.Kk

73.20.Fz (Weak or Anderson localization) 71.70.Ej (Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)

Huan Zhang(张欢), Sheng Liu(刘胜), and Yongsheng Zhang(张永生). Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential[J]. 中国物理B, 2022, 31(7): 70305-070305.

Huan Zhang(张欢), Sheng Liu(刘胜), and Yongsheng Zhang(张永生). Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential[J]. Chin. Phys. B, 2022, 31(7): 70305-070305.

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Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential

Anderson localization of a spin-orbit coupled Bose-Einstein condensate in disorder potential

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