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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
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| Cite this article: |
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Yan-Na Li, Wei-Dong Li 2017 Chin. Phys. Lett. 34 070303 |
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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.
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Received: 09 February 2017
Published: 23 June 2017
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| PACS: |
03.75.Kk
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(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
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05.30.Jp
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(Boson systems)
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67.85.Fg
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(Multicomponent condensates; spinor condensates)
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74.50.+r
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(Tunneling phenomena; Josephson effects)
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