| ATOMIC AND MOLECULAR PHYSICS |
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Rosen--Zener Transition in a Nonlinear System for Two-Component Bose--Einstein Condensates in Optical Lattices |
| JIANG Xin, LIN Mai-Mai, LI Sheng-Chang, DUAN Wen-Shan |
| College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 |
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| Cite this article: |
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JIANG Xin, LIN Mai-Mai, LI Sheng-Chang et al 2009 Chin. Phys. Lett. 26 013701 |
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Abstract We study the Rosen-Zener transition (RZT) in a nonlinear system for two-component Bose--Einstein condensates in optical lattices. It is found that the percentage of the components could affect the quantum transition dramatically. For the component with large percentage it is equivalent that the effect of the nonlinearity is stronger, whereas for the component with small percentage the effect is weaker. We also find that the nonlinearity c11 can affect the quantum transition dramatically. This is similar to that reported from Ref.[14]. Compared with one-component systems, however, the effect of the nonlinearity is decreased due to the two components of the BECs in optical lattices. Furthermore, the effect of the coupling nonlinearity between two components c12 is studied. The component with large percentage is more affected by the nonlinearity than that with small-percentage component
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| Keywords:
37.10.Jk
37.10.Vz
03.75.Lm
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Received: 02 September 2008
Published: 24 December 2008
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| PACS: |
37.10.Jk
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(Atoms in optical lattices)
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37.10.Vz
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(Mechanical effects of light on atoms, molecules, and ions)
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03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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