Phase Dissipation of an Open Two-Mode Bose–Einstein Condensate
Yan-Na Li, Wei-Dong Li**
Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
Abstract ：We study the dynamics of a two-mode Bose–Hubbard model with phase dissipation, based on the master equation. An analytical solution is presented with nonzero asymmetry and phase noise. The effects of asymmetry and phase noise play a contrasting role in the dynamics. The asymmetry makes the oscillation fast, while phase noise enlarges the period. The conditions for the cases of fast decay and oscillation are presented. As a possible application, the dynamical evolution of the population for cold atomic gases with synthetic gauge interaction, which can be understood as two-mode dynamics in momentum space, is predicted.
收稿日期: 2017-02-09
出版日期: 2017-06-23
:
03.75.Kk
(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
05.30.Jp
(Boson systems)
67.85.Fg
(Multicomponent condensates; spinor condensates)
74.50.+r
(Tunneling phenomena; Josephson effects)
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2017, Vol. 34 
