中国物理B ›› 2005, Vol. 14 ›› Issue (4): 690-696.doi: 10.1088/1009-1963/14/4/009

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Evolution of spin-dependent atomic wave packets in a harmonic potential

詹明生1, 文灵华2, 刘敏2, 孔令波2, 陈爱喜2   

  1. (1)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China;Centre for Cold Atom Physics, Chinese Academy of Sciences,Wuhan, 430071, China; (2)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China;Centre for Cold Atom Physics, Chinese Academy of Sciences,Wuhan, 430071, China;Graduate School, Chinese Academy of Sciences, Wuhan, 430071, China
  • 收稿日期:2004-10-10 修回日期:2004-11-06 出版日期:2005-04-20 发布日期:2005-03-28
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474119 and 10474117),by the National Fundamental Research Programme of China (Grant No001CB309309), and also by funds from the Chinese Academy of Sciences.

Evolution of spin-dependent atomic wave packets in a harmonic potential

Wen Ling-Hua (文灵华)abc, Liu Min (刘敏)abc, Kong Ling-Bo (孔令波)abc, Chen Ai-Xi (陈爱喜)abc, Zhan Ming-Sheng (詹明生)ab    

  1. a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; b Centre for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; c  Graduate School, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2004-10-10 Revised:2004-11-06 Online:2005-04-20 Published:2005-03-28
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474119 and 10474117),by the National Fundamental Research Programme of China (Grant No001CB309309), and also by funds from the Chinese Academy of Sciences.

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摘要： We have investigated theoretically the evolution of spin-dependent atomic wave packets in a harmonic magnetic trapping potential. For a Bose-condensed gas, which undergoes a Mott insulator transition and a spin-dependent transport, the atomic wavefunction can be described by an entangled single-atom state. Due to the confinement of the harmonic potential, the density distributions exhibit periodic decay and revival, which is different from the case of free expansion after switching off the combined harmonic and optical lattice potential.

Abstract: We have investigated theoretically the evolution of spin-dependent atomic wave packets in a harmonic magnetic trapping potential. For a Bose-condensed gas, which undergoes a Mott insulator transition and a spin-dependent transport, the atomic wavefunction can be described by an entangled single-atom state. Due to the confinement of the harmonic potential, the density distributions exhibit periodic decay and revival, which is different from the case of free expansion after switching off the combined harmonic and optical lattice potential.

Key words: Bose--Einstein condensate, density distribution, spin-dependent optical lattice, magnetic trap

中图分类号: 

  • 03.75.-b
05.30.Jp (Boson systems)