Tunneling Dynamics of Two-Species Molecular Bose-Einstein Condensates |
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Authors: | CHEN Chang-Yong GAO Ke-Lin |
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Institution: | 1. Department of Physics, Loudi Teachers' College,
Loudi 417000, China
;2. State Key Laboratory of Magnetic Resonance and Atomic
and Molecular Physics, Wuhan Institute of Physics and Mathematics,
the Chinese Academy of Sciences, Wuhan 430071, China |
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Abstract: | We study tunneling dynamics of atomic group in two-species molecular Bose-Einstein condensates. It is shown that the tunneling of the atom group depends on not only the tunneling coupling constant between the atomic pair molecular condensate and the three-atomic group molecular condensate, but also the inter-molecular nonlinear interactions and the initial number of atoms in these condensates. It is discovered that besides oscillating tunneling current between the atomic pair molecular condensate and the three-atomic group molecular condensate, the nonlinear atomic group tunneling dynamics sustains a self-maintained population imbalance: a macroscopic quantum self-trapping effect. |
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Keywords: | tunneling dynamics molecular Bose-Einstein condensate quantum self-traping effect |
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