中国物理B ›› 2022, Vol. 31 ›› Issue (11): 110302-110302.doi: 10.1088/1674-1056/ac80ac

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Spin current in a spinor Bose-Einstein condensate induced by a gradient magnetic field

Li Tian(田丽)1, Ningxuan Zheng(郑宁宣)1, Jun Jian(蹇君)3, Wenliang Liu(刘文良)1,2,†, Jizhou Wu(武寄洲)1,2,‡, Yuqing Li(李玉清)1,2, Yongming Fu(付永明)1, Peng Li(李鹏)1, Vladimir Sovkov1,4, Jie Ma(马杰)1,2, Liantuan Xiao(肖连团)1,2, and Suotang Jia(贾锁堂)1,2   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    3 School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China;
    4 St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
  • 收稿日期:2022-04-19 修回日期:2022-06-21 接受日期:2022-07-13 出版日期:2022-10-17 发布日期:2022-10-17
  • 通讯作者: Wenliang Liu, Jizhou Wu E-mail:Liuwl@sxu.edu.cn;wujz@sxu.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant No. 2017YFA0304203), the National Natural Science Foundation of China (Grant Nos. 62020106014, 62175140, 61901249, 92165106, 12104276, and 62011530047), PCSIRT (Grant No. IRT-17R70), the Educational Reform and Innovation Project of Higher Education in Shanxi Province, China (Grant Nos. Z20220001 and Z20220013), 111 Project (Grant No. D18001), the Applied Basic Research Project of Shanxi Province (Grant Nos. 201901D211191 and 201901D211188), and the Shanxi 1331 KSC.

Spin current in a spinor Bose-Einstein condensate induced by a gradient magnetic field

Li Tian(田丽)1, Ningxuan Zheng(郑宁宣)1, Jun Jian(蹇君)3, Wenliang Liu(刘文良)1,2,†, Jizhou Wu(武寄洲)1,2,‡, Yuqing Li(李玉清)1,2, Yongming Fu(付永明)1, Peng Li(李鹏)1, Vladimir Sovkov1,4, Jie Ma(马杰)1,2, Liantuan Xiao(肖连团)1,2, and Suotang Jia(贾锁堂)1,2   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    3 School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China;
    4 St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
  • Received:2022-04-19 Revised:2022-06-21 Accepted:2022-07-13 Online:2022-10-17 Published:2022-10-17
  • Contact: Wenliang Liu, Jizhou Wu E-mail:Liuwl@sxu.edu.cn;wujz@sxu.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant No. 2017YFA0304203), the National Natural Science Foundation of China (Grant Nos. 62020106014, 62175140, 61901249, 92165106, 12104276, and 62011530047), PCSIRT (Grant No. IRT-17R70), the Educational Reform and Innovation Project of Higher Education in Shanxi Province, China (Grant Nos. Z20220001 and Z20220013), 111 Project (Grant No. D18001), the Applied Basic Research Project of Shanxi Province (Grant Nos. 201901D211191 and 201901D211188), and the Shanxi 1331 KSC.

摘要: We develop a research of spin currents in a 23Na spinor Bose-Einstein condensate (BEC) by applying a magnetic field gradient. The spin current is successfully induced by the spin-dependent force arising from the magnetic field gradient. The dynamics of the spin components under the magnetic force is investigated. The study is promising to be extended to produce a longer spin-coherence and to enhance the sensitivity of the spin-mixing interferometry in a spinor BEC.

关键词: spinor Bose-Einstein condensate, spin current

Abstract: We develop a research of spin currents in a 23Na spinor Bose-Einstein condensate (BEC) by applying a magnetic field gradient. The spin current is successfully induced by the spin-dependent force arising from the magnetic field gradient. The dynamics of the spin components under the magnetic force is investigated. The study is promising to be extended to produce a longer spin-coherence and to enhance the sensitivity of the spin-mixing interferometry in a spinor BEC.

Key words: spinor Bose-Einstein condensate, spin current

中图分类号:  (Multicomponent condensates; spinor condensates)

  • 03.75.Mn
67.10.Ba (Boson degeneracy) 67.85.-d (Ultracold gases, trapped gases)