Formation of parametric solitons in coupled atom–molecule quantum gases via controlled nonlinear interactions

We consider an atomic Bose–Einstein condensate parametrically coupled to a molecular condensate with tunable interactions. The space distribution and nonlinear dynamics of this coupled system, especially the parametric solitons, are investigated within the full parameter space accounts for all the n...

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Bibliographic Details
Published in:Optics communications 2012-02, Vol.285 (4), p.487-490
Main Authors: Zhang, Xiao-Fei, Wang, Deng-Shan, Wen, Lin, Hu, Xing-Hua, Qin Yang, Liu, W.M.
Format: Article
Language:English
Subjects:
Atomic–molecular Bose–Einstein condensates
Bose-Einstein condensates
Conversion
Coupling (molecular)
Dynamical systems
Energy of formation
Nonlinear dynamics
Nonlinearity
Parametric solitons
Solitons
Tunable interactions
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Summary:We consider an atomic Bose–Einstein condensate parametrically coupled to a molecular condensate with tunable interactions. The space distribution and nonlinear dynamics of this coupled system, especially the parametric solitons, are investigated within the full parameter space accounts for all the nonlinear two-body collisions, together with the atom–molecule conversion coupling and the bare formation energy of the molecular species. The results show that the exact parametric solitons can be formed via controlled nonlinear interactions, and the atom–molecule transfer term can provide an effective potential which can be used to stable the coupled system even in the absence of the external potential. We also give an experimental setup and detection of the atomic–molecular Bose–Einstein condensates in future experiments.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2011.10.004