Cyclotron dynamics of a Bose–Einstein condensate in a quadruple-well potential with synthetic gauge fields
Wen-Yuan Wang1,2, Ji Lin3, Jie Liu4,5()
1. Beijing Computational Science Research Center, Beijing 100193, China 2. Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China 3. Department of Physics, Zhejiang Normal University, Jinhua 321004, China 4. Graduate School of China Academy of Engineering Physics, Beijing 100193, China 5. HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
We investigate the cyclotron dynamics of Bose–Einstein condensate (BEC) in a quadruple-well potential with synthetic gauge fields. We use laser-assisted tunneling to generate large tunable effective magnetic fields for BEC. The mean position of BEC follows an orbit that simulated the cyclotron orbits of charged particles in a magnetic field. In the absence of atomic interaction, atom dynamics may exhibit periodic or quasi-periodic cyclotron orbits. In the presence of atomic interaction, the system may exhibit self-trapping, which depends on synthetic gauge fields and atomic interaction strength. In particular, the competition between synthetic gauge fields and atomic interaction leads to the generation of several discontinuous parameter windows for the transition to self-trapping, which is obviously different from that without synthetic gauge fields.
. [J]. Frontiers of Physics, 2021, 16(5): 52502.
Wen-Yuan Wang, Ji Lin, Jie Liu. Cyclotron dynamics of a Bose–Einstein condensate in a quadruple-well potential with synthetic gauge fields. Front. Phys. , 2021, 16(5): 52502.
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