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Dynamical properties of ultracold Bose atomic gases in one-dimensional optical lattices created by two schemes |
| Jiang Zhu(朱江), Cheng-Ling Bian(边成玲), Hong-Chen Wang(王红晨) |
| College of Physics and Electronic Engineering, Hainan Normal University, Haikou 571158, China |
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Abstract An optical lattice could be produced either by splitting an input light (splitting scheme) or by reflecting the input light by a mirror (retro-reflected scheme). We study quantum dynamical properties of an atomic Bose-Einstein condensate (BEC) in the two schemes. Adopting a mean field theory and neglecting collision interactions between atoms, we find that the momentum and spatial distributions of BEC are always symmetric in the splitting scheme which, however, are asymmetric in the retro-reflected scheme. The reason for this difference is due to the local field effect. Furthermore, we propose an effective method to avoid asymmetric diffraction.
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Received: 24 February 2019
Revised: 08 June 2019
Accepted manuscript online:
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PACS:
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37.10.Jk
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(Atoms in optical lattices)
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67.85.Hj
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(Bose-Einstein condensates in optical potentials)
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42.25.Fx
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(Diffraction and scattering)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11764012, 11565011, 11665010, 61864002, and 11805047) and the Natural Science Foundation of Hainan Province, China (Grant No. 20165197). |
Corresponding Authors:
Jiang Zhu
E-mail: aresjiangzhu@163.com
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Cite this article:
Jiang Zhu(朱江), Cheng-Ling Bian(边成玲), Hong-Chen Wang(王红晨) Dynamical properties of ultracold Bose atomic gases in one-dimensional optical lattices created by two schemes 2019 Chin. Phys. B 28 093701
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