中国物理B ›› 2009, Vol. 18 ›› Issue (12): 5168-5172.doi: 10.1088/1674-1056/18/12/012

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Generation of arbitrary four-atom entangled decoherence-free states

吕天全1, 计新2, 张寿2   

  1. (1)Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; (2)Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • 收稿日期:2009-02-07 修回日期:2009-03-04 出版日期:2009-12-20 发布日期:2009-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001) and the Science Foundation of Yanbian University, China (Grant No 2007-35).

Generation of arbitrary four-atom entangled decoherence-free states

Ji Xin(计新)a)b)†, ü Tian-Quan(吕天全)a), and Zhang Shou(张寿) a)b)‡   

  1. a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • Received:2009-02-07 Revised:2009-03-04 Online:2009-12-20 Published:2009-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001) and the Science Foundation of Yanbian University, China (Grant No 2007-35).

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摘要： This paper proposes a scheme to generate arbitrary four-atom entangled decoherence-free states by using simple linear optical elements, four one-sided cavities in which four atoms are confined respectively. By conveniently tuning the titled angle of one half-wave plate, it can obtain arbitrary four-atom entangled decoherence-free states with a successful probability of 1 as long as there is no photon loss.

Abstract: This paper proposes a scheme to generate arbitrary four-atom entangled decoherence-free states by using simple linear optical elements, four one-sided cavities in which four atoms are confined respectively. By conveniently tuning the titled angle of one half-wave plate, it can obtain arbitrary four-atom entangled decoherence-free states with a successful probability of 1 as long as there is no photon loss.

Key words: one-sided cavity, linear optical element, four-atom entangled decoherence-free states

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
42.50.Dv (Quantum state engineering and measurements)