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Scattering effect of atoms through a Bose-Einstein condensate in an optical Lattice with a single defect |
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| Authors: | C. X. Zhang B. Zhou Y. H. Nie J. Q. Liang J. Liu |
| Affiliation: | 1. Physical Department, Zhejiang Ocean University, Zhoushan, 316000, P.R. China 2. Department of Physics, and Center for Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China 3. Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan, Shanxi, 030006, P.R. China 4. Department of Physics, Hubei University, Wuhan, 430062, P.R. China 5. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009 (28), 100088, Beijing, P.R. China |
| Abstract: | We study the transport of atoms across a localized Bose-Einstein condensate in an onedimensional optical lattice with a single defect. Our analytical and numerical results show that the defect as well as the nonlinear parameter can control the transmission of the atoms beam and the position of total reflection caused by Fano resonance. These interesting features may be a very useful basis for devising tunable atom filters or a button. |
| Keywords: | KeywordHeading" >PACS 03.75.Lm Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations 05.45.-a Nonlinear dynamics and chaos 05.60.Gg Quantum transport 42.25.Bs Wave propagation, transmission and absorption |
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