中国物理B ›› 2013, Vol. 22 ›› Issue (12): 120304-120304.doi: 10.1088/1674-1056/22/12/120304

• GENERAL • 上一篇    下一篇

The dynamics of three coupled dipolar Bose–Einstein condensates

武建华a, 许胜男b   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Center for Computer Information, Hebei Normal University for Nationalities, Chengde 067000, China
  • 收稿日期:2013-04-15 修回日期:2013-05-09 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Key Basic Research Special Foundation of China (Grant Nos. 2011CB921502, 2012CB821305, 2009CB930701, and 2010CB922904), the National Natural Science Foundation of China (Grant Nos. 10934010, 11228409, and 61227902), and the National Natural Science Foundation of China–The Research Grants Council (Grant Nos. 11061160490 and 1386-N-HKU748/10).

The dynamics of three coupled dipolar Bose–Einstein condensates

Wu Jian-Hua (武建华)a, Xu Sheng-Nan (许胜男)b   

  1. a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Center for Computer Information, Hebei Normal University for Nationalities, Chengde 067000, China
  • Received:2013-04-15 Revised:2013-05-09 Online:2013-10-25 Published:2013-10-25
  • Contact: Wu Jian-Hua E-mail:wjh@iphy.ac.cn
  • Supported by:
    Project supported by the National Key Basic Research Special Foundation of China (Grant Nos. 2011CB921502, 2012CB821305, 2009CB930701, and 2010CB922904), the National Natural Science Foundation of China (Grant Nos. 10934010, 11228409, and 61227902), and the National Natural Science Foundation of China–The Research Grants Council (Grant Nos. 11061160490 and 1386-N-HKU748/10).

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摘要： The dynamics of the three coupled dipolar Bose–Einstein condensates containing N bosons is investigated within a mean-field semiclassical picture based on the coherent-state method. Varieties of periodic solutions (configured as vortex, single depleted well, and dimerlike states) are obtained analytically when the fixed points are identified on the N=constant. The system dynamics are studied via numeric integration of trimer motion equations, thus revealing macroscopic effects of population inversion and self-trapping with different initial states. In particular, the trajectory of the oscillations of the populations in each well shows how the dynamics of the condensates are effected by the presence of dipole–dipole interaction and gauge field.

关键词: Bose–, Einstein condensate, triple-well, dipole–, dipole interaction, dynamics

Abstract: The dynamics of the three coupled dipolar Bose–Einstein condensates containing N bosons is investigated within a mean-field semiclassical picture based on the coherent-state method. Varieties of periodic solutions (configured as vortex, single depleted well, and dimerlike states) are obtained analytically when the fixed points are identified on the N=constant. The system dynamics are studied via numeric integration of trimer motion equations, thus revealing macroscopic effects of population inversion and self-trapping with different initial states. In particular, the trajectory of the oscillations of the populations in each well shows how the dynamics of the condensates are effected by the presence of dipole–dipole interaction and gauge field.

Key words: Bose–, Einstein condensate, triple-well, dipole–, dipole interaction, dynamics

中图分类号:  (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

  • 03.75.Kk
03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations) 03.65.Sq (Semiclassical theories and applications)