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Feshbach resonance management of vector solitons in two-component Bose–Einstein condensates |
| Wang Qiang (王强)a, Wen Lin (文林)a, Li Zai-Dong (李再东 )b |
a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China |
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Abstract We consider two coupled Gross-Pitaevskii equations describing a two-component Bose-Einstein condensates with time-dependent atomic interactions loaded in an external harmonic potential, and investigate the dynamics of vector solitons. By using a direct method, we construct a novel family of vector soliton solutions, which are the linear combination between dark and bright solitons in each component. Our results show that due to the superposition between dark and bright solitons, such vector solitons possess many novel and interesting properties. The dynamics of vector solitons can be controlled by Feshbach resonance technique, and the vector solitons can keep the dynamic stability against the variation of the scattering length.
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Received: 27 February 2012
Revised: 07 March 2012
Accepted manuscript online:
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PACS:
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05.30.Jp
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(Boson systems)
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11.10.Lm
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(Nonlinear or nonlocal theories and models)
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| Fund: Project supported by the National Key Basic Research Program of China (Grant Nos. 2011CB921502, 2012CB821305, 2009CB930701, and 2010CB922904), the National Natural Science Foundation of China (NSFC) (Grant Nos. 10934010 and 60978019), the NSFC-RGC (Grant Nos. 11061160490 and 1386-N-HKU748/10), and the Key Program of the Chinese Ministry of Education (Grant No. 2011015). |
Corresponding Authors:
Wen Lin, Li Zai-Dong
E-mail: wlqx@iphy.ac.cn; zdli2003@yahoo.com
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Cite this article:
Wang Qiang (王强), Wen Lin (文林), Li Zai-Dong (李再东 ) Feshbach resonance management of vector solitons in two-component Bose–Einstein condensates 2012 Chin. Phys. B 21 080501
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