The population transfer and superflow associated with the spatiotemporal Bloch states for a high-frequency driven spin–orbit coupled Bose–Einstein condensate

Results in Physics

Hao Chen¹  Tianzhe Wan²  Yalan Li²  Min Yao²  Haiming Deng²  Shufang Ding²  Yichen He²  Chunzhi Jiang²  Chao Kong²  Tao Han²  Dajun Lei²  Jianquan Huang² 

[1] College of Physics and Electronics, Hunan Institute of Science and Technology, Yueyang 414006, China;School of Physics and Electronic–Electrical Engineering, Xiangnan University, Chenzhou 423000, China;

关键词: Bose–Einstein condensate;    Spin–orbit coupling;    Bloch state;    High-frequency approximation;    Superfluid flow;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this paper, we give the normal and abnormal Bloch states at the Brillouin zone edge to a spin–orbit (SO) coupled Bose–Einstein condensate (BEC) with a high-frequency driving and confined in a periodic lattice. The generation of the spatiotemporal Bloch states and the associated the population transfer and the superflow are studied. We find that Rabi coupling strength can enhance or reduce the population transfer between two BEC components for the obtained Bloch states. In addition, we can realize the transition between superfluid state and critical balance state by adjusting system parameters, which could be helpful to the quantum transport of the SO coupled cold-atom system.

【 授权许可】

Unknown