Tunneling Dynamics Between Atomic and Molecular Bose-Einstein Condensates |
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| Authors: | CHEN Chang-Yong |
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| Affiliation: | 1. Department of Physics, Loudi Teachers' College, Loudi 417000,China;2. Key Laboratory of Magnetic Resonance and Atomic andMolecular Physics, Wuhan Institute of Physics and Mathematics, theChinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | Tunneling dynamics of multi-atomic molecules between atomic and multi-atomic molecular Bose-Einstein condensates with Feshbach resonance is investigated.It is indicated that the tunneling in the two Bose-Einstein condensates depends on not only the inter-atomic-molecular nonlinear interactions and the initial number of atoms in these condensates,but also the tunneling coupling between the atomic condensate and the multi-atomic molecular condensate.It is discovered that besides oscillating tunneling current between the atomic condensate and the multi-atomic molecular condensate,the nonlinear multi-atomic molecular tunneling dynamics sustains a self-locked population imbalance:a macroscopic quantum self-trapping effect.The influence of de-coherence caused by non-condensate atoms on the tunneling dynamics is studied.It is shown that de-coherence suppresses the multi-atomic molecular tunneling.Moreover,the conception of the molecular Bose-Einstein condensate,which is different from the conventional single-atomic Bose-Einstein condensate,is specially emphasized in this paper. |
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| Keywords: | tunneling dynamics an atomic(a molecular) Bose-Einstein condensate Feshbach resonance decoherence |
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