中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1065-1071.doi: 10.1088/1674-1056/18/3/038

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Four-mode continuous-variables entangled state: generation from beam splitter, a parametric down-conversion and a polarizer

匡买花, 马善钧, 刘冬梅, 王淑静   

  1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China
  • 收稿日期:2008-07-13 修回日期:2008-09-23 出版日期:2009-03-20 发布日期:2009-03-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Jiangxi Province, China (Grant No 2007GZW0171) and the Foundation of Education Department of Jiangxi Province, China (Grant No [2007] 136).

Four-mode continuous-variables entangled state: generation from beam splitter, a parametric down-conversion and a polarizer

Kuang Mai-Hua(匡买花), Ma Shan-Jun(马善钧)†, Liu Dong-Mei(刘冬梅), and Wang Shu-Jing(王淑静)   

  1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China
  • Received:2008-07-13 Revised:2008-09-23 Online:2009-03-20 Published:2009-03-20
  • Supported by:
    Project supported by the Natural Science Foundation of Jiangxi Province, China (Grant No 2007GZW0171) and the Foundation of Education Department of Jiangxi Province, China (Grant No [2007] 136).

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摘要： We introduce a new kind of four-mode continuous variable entangled state in Fock space. The completeness relation and the partly nonorthonormal property of such a state are proven. The scheme to generate this state is presented by combining a symmetrical beamsplitter, a parametric down-conversion and a polarizer. After making a single-mode quadrature amplitude measurement, the remaining three modes are kept in entanglement. And its applications are also discussed.

Abstract: We introduce a new kind of four-mode continuous variable entangled state in Fock space. The completeness relation and the partly nonorthonormal property of such a state are proven. The scheme to generate this state is presented by combining a symmetrical beamsplitter, a parametric down-conversion and a polarizer. After making a single-mode quadrature amplitude measurement, the remaining three modes are kept in entanglement. And its applications are also discussed.

Key words: four-mode entangled state, integration within ordered product (IWOP) technique, quadrature amplitude measurement

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.65.Lm (Parametric down conversion and production of entangled photons) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.65.Ud (Entanglement and quantum nonlocality)