中国物理B ›› 2009, Vol. 18 ›› Issue (9): 3706-3709.doi: 10.1088/1674-1056/18/9/016

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Generation of a χ-type four-atom entangled state

王洪福1, 沈洪武2, 计新3, 张寿3   

  1. (1)Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; (2)Department of Physics, College of Science, Yanbian University, Yanji 133002, China; (3)Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2008-11-20 修回日期:2008-12-19 出版日期:2009-09-20 发布日期:2009-09-20
  • 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 a $\chi$-type four-atom entangled state

Shen Hong-Wu(沈洪武)a), Wang Hong-Fu(王洪福)b), Ji Xin(计新)a)b)†, and Zhang Shou(张寿)a)b)‡   

  1. a Department of Physics, College of Science, Yanbian University, Yanji 133002, China; b Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China
  • Received:2008-11-20 Revised:2008-12-19 Online:2009-09-20 Published:2009-09-20
  • 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 a new χ-type four-atom entangled state for the first time by using linear optics elements, four one-sided cavities (one three-level atom) and a conventional photon detector. The linear optical elements and conventional photon detector are simple and accessible in experiments, which makes the scheme more feasible with current technology. In addition, the state |χ003214 with probability 1 can be generated as long as there is no photon loss.

Abstract: This paper proposes a scheme to generate a new $\chi$-type four-atom entangled state for the first time by using linear optics elements, four one-sided cavities (one three-level atom) and a conventional photon detector. The linear optical elements and conventional photon detector are simple and accessible in experiments, which makes the scheme more feasible with current technology. In addition, the state $|\chi^{00}\rangle_{3214}$ with probability 1 can be generated as long as there is no photon loss.

Key words: quantum entanglement, linear optics, $\chi$-type entangled state

中图分类号:  (Quantum optics)

  • 42.50.-p
42.79.Ci (Filters, zone plates, and polarizers) 42.79.Fm (Reflectors, beam splitters, and deflectors)