中国物理B ›› 2003, Vol. 12 ›› Issue (7): 708-713.doi: 10.1088/1009-1963/12/7/303

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Nonadiabatic effects on population transfer of two Bose－Einstein condensates induced by atomic interaction

杜春光1, 李师群2, 胡正峰3   

  1. (1)Key Laboratory for Quantum Information and Measurements of Education Ministry, Department of Physics, Tsinghua University, Beijing 100084, China; (2)Key Laboratory for Quantum Information and Measurements of Education Ministry, Department of Physics, Tsinghua University, Beijing 100084, China; Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China; (3)Key Laboratory for Quantum Information and Measurements of Education Ministry, Department of Physics, Tsinghua University, Beijing 100084, China; Department of Physics, Nanjing Normal University, Nanjing 210097, China
  • 收稿日期:2002-05-24 修回日期:2003-03-19 出版日期:2003-07-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 19975027) and the State Key Development Program for Basic Research of China (Grant No 001CB309308).

Nonadiabatic effects on population transfer of two Bose－Einstein condensates induced by atomic interaction

Hu Zheng-Feng (胡正峰)ab, Du Chun-Guang (杜春光)a, Li Shi-Qun (李师群)ac   

  1. a Key Laboratory for Quantum Information and Measurements of Education Ministry, Department of Physics, Tsinghua University, Beijing 100084, China; b Department of Physics, Nanjing Normal University, Nanjing 210097, China; c Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China
  • Received:2002-05-24 Revised:2003-03-19 Online:2003-07-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 19975027) and the State Key Development Program for Basic Research of China (Grant No 001CB309308).

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摘要： We investigate the stimulated Raman adiabatic passage for Bose－Einstein condensate (BEC) states which are trapped in different potential wells or two ground states of BEC in the same trap. We consider that lasers are nearly resonant with the atomic transitions. The difference of population transfer processes between BEC atoms and usual atoms is that the atomic interaction of the BEC atoms can cause some nonadiabatic effects, which may degrade the process. But with suitable detunings of laser pulses, the effects can be remedied to some extent according to different atomic interactions.

Abstract: We investigate the stimulated Raman adiabatic passage for Bose－Einstein condensate (BEC) states which are trapped in different potential wells or two ground states of BEC in the same trap. We consider that lasers are nearly resonant with the atomic transitions. The difference of population transfer processes between BEC atoms and usual atoms is that the atomic interaction of the BEC atoms can cause some nonadiabatic effects, which may degrade the process. But with suitable detunings of laser pulses, the effects can be remedied to some extent according to different atomic interactions.

Key words: quantum condensate phenomena, photon-atom interaction, Bose systems

中图分类号:  (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

  • 03.75.Lm
03.75.Be (Atom and neutron optics)