中国物理B ›› 2011, Vol. 20 ›› Issue (5): 50314-050314.doi: 10.1088/1674-1056/20/5/050314

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Generation of Wn state with three atoms trapped in two remote cavities coupled by an optical fibre

方卯发1, 李艳玲2   

  1. (1)College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; (2)School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
  • 收稿日期:2010-12-05 修回日期:2011-01-06 出版日期:2011-05-15 发布日期:2011-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074072).

Generation of Wn state with three atoms trapped in two remote cavities coupled by an optical fibre

Li Yan-Ling(李艳玲)a)† and Fang Mao-Fa(方卯发)b)   

  1. a School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China; b College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • Received:2010-12-05 Revised:2011-01-06 Online:2011-05-15 Published:2011-05-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074072).

摘要: We propose two schemes for the generation of the Wn state with three atoms separately trapped in two distant cavities coupled by an optical fibre. One is implemented by controlling the interaction time, the other is implemented via the adiabatic passage. The influence of various decoherence processes, such as spontaneous emission of the atoms and photon leakages of the cavities and the optical fibre, on the fidelity is also investigated. It is found that the Wn state can be generated with high fidelity even when these decoherence processes are present.

关键词: Wn state, adiabatic passage, optical fibre

Abstract: We propose two schemes for the generation of the Wn state with three atoms separately trapped in two distant cavities coupled by an optical fibre. One is implemented by controlling the interaction time, the other is implemented via the adiabatic passage. The influence of various decoherence processes, such as spontaneous emission of the atoms and photon leakages of the cavities and the optical fibre, on the fidelity is also investigated. It is found that the Wn state can be generated with high fidelity even when these decoherence processes are present.

Key words: Wn state, adiabatic passage, optical fibre

中图分类号:  (Entanglement measures, witnesses, and other characterizations)

  • 03.67.Mn
03.65.Ud (Entanglement and quantum nonlocality) 42.50.Pq (Cavity quantum electrodynamics; micromasers) 42.81.Qb (Fiber waveguides, couplers, and arrays)