Dynamics of spinor Bose-Einstein condensate subject to dissipation

doi:10.1088/1674-1056/25/4/040501

中国物理B ›› 2016, Vol. 25 ›› Issue (4): 40501-040501.doi: 10.1088/1674-1056/25/4/040501

Dynamics of spinor Bose-Einstein condensate subject to dissipation

Man-Man Pang(庞曼曼), Ya-Jiang Hao(郝亚江)

Department of Physics, University of Science and Technology Beijing, Beijing 100083, China

收稿日期:2015-10-19 修回日期:2015-12-02 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: Ya-Jiang Hao E-mail:haoyj@ustb.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11004007) and the Fundamental Research Funds for the Central Universities of China.

Dynamics of spinor Bose-Einstein condensate subject to dissipation

Man-Man Pang(庞曼曼), Ya-Jiang Hao(郝亚江)

Department of Physics, University of Science and Technology Beijing, Beijing 100083, China

Received:2015-10-19 Revised:2015-12-02 Online:2016-04-05 Published:2016-04-05
Contact: Ya-Jiang Hao E-mail:haoyj@ustb.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11004007) and the Fundamental Research Funds for the Central Universities of China.

摘要/Abstract

摘要： We investigate the internal dynamics of the spinor Bose-Einstein condensates subject to dissipation by solving the Lindblad master equation. It is shown that for the condensates without dissipation its dynamics always evolve along a specific orbital in the phase space of (n₀, θ) and display three kinds of dynamical properties including Josephson-like oscillation, self-trapping-like oscillation, and ‘running phase'. In contrast, the condensates subject to dissipation will not evolve along the specific dynamical orbital. If component-1 and component-(-1) dissipate at different rates, the magnetization m will not conserve and the system transits between different dynamical regions. The dynamical properties can be exhibited in the phase space of (n₀, θ, m).

关键词: spinor Bose-Einstein condensates, dissipation, master equation

Abstract: We investigate the internal dynamics of the spinor Bose-Einstein condensates subject to dissipation by solving the Lindblad master equation. It is shown that for the condensates without dissipation its dynamics always evolve along a specific orbital in the phase space of (n₀, θ) and display three kinds of dynamical properties including Josephson-like oscillation, self-trapping-like oscillation, and ‘running phase'. In contrast, the condensates subject to dissipation will not evolve along the specific dynamical orbital. If component-1 and component-(-1) dissipate at different rates, the magnetization m will not conserve and the system transits between different dynamical regions. The dynamical properties can be exhibited in the phase space of (n₀, θ, m).

Key words: spinor Bose-Einstein condensates, dissipation, master equation

中图分类号: (Boson systems)

05.30.Jp

03.65.Yz (Decoherence; open systems; quantum statistical methods) 03.75.Mn (Multicomponent condensates; spinor condensates) 03.75.Kk (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

庞曼曼, 郝亚江. Dynamics of spinor Bose-Einstein condensate subject to dissipation[J]. 中国物理B, 2016, 25(4): 40501-040501.

Man-Man Pang(庞曼曼), Ya-Jiang Hao(郝亚江). Dynamics of spinor Bose-Einstein condensate subject to dissipation[J]. Chin. Phys. B, 2016, 25(4): 40501-040501.

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