中国物理B ›› 2012, Vol. 21 ›› Issue (10): 100305-100305.doi: 10.1088/1674-1056/21/10/100305

• GENERAL • 上一篇    下一篇

A new bipartite entangled state describing the parametric down-conversion process and its applications in quantum optics

孟祥国a, 王继锁a b, 张晓燕c   

  1. a Department of Physics, Liaocheng University, Liaocheng 252059, China;
    b Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, College of Physics and Engineering, Qufu Normal University, Qufu 273165, China;
    c Department of Physics, Heze University, Heze 274015, China
  • 收稿日期:2012-02-16 修回日期:2012-03-08 出版日期:2012-09-01 发布日期:2012-09-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11147009), the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2010AQ027 and ZR2012AM004), and the Shandong Provincial Higher Educational Science and Technology Program, China (Grant No. J10LA15).

A new bipartite entangled state describing the parametric down-conversion process and its applications in quantum optics

Meng Xiang-Guo (孟祥国)a, Wang Ji-Suo (王继锁)a b, Zhang Xiao-Yan (张晓燕)c   

  1. a Department of Physics, Liaocheng University, Liaocheng 252059, China;
    b Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, College of Physics and Engineering, Qufu Normal University, Qufu 273165, China;
    c Department of Physics, Heze University, Heze 274015, China
  • Received:2012-02-16 Revised:2012-03-08 Online:2012-09-01 Published:2012-09-01
  • Contact: Meng Xiang-Guo E-mail:mengxiangguo1978@sina.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11147009), the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2010AQ027 and ZR2012AM004), and the Shandong Provincial Higher Educational Science and Technology Program, China (Grant No. J10LA15).

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摘要： We construct a new bipartite entangled state (NBES), which describes both the squeezing and the entanglement involved in the parametric down-conversion process and can be produced using a symmetric beam splitter. Constructing asymmetric ket-bra integrations based on the NBES leads to some new squeezing operators, which clearly exhibit the relationships between squeezing and entangled state transformations. Moreover, an entangled Wigner operator with a definite physical meaning is also presented.

关键词: new bipartite entangled state, quantum optics, beam splitter, squeezing operator, entangled Wigner operator

Abstract: We construct a new bipartite entangled state (NBES), which describes both the squeezing and the entanglement involved in the parametric down-conversion process and can be produced using a symmetric beam splitter. Constructing asymmetric ket-bra integrations based on the NBES leads to some new squeezing operators, which clearly exhibit the relationships between squeezing and entangled state transformations. Moreover, an entangled Wigner operator with a definite physical meaning is also presented.

Key words: new bipartite entangled state, quantum optics, beam splitter, squeezing operator, entangled Wigner operator

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
42.79.Fm (Reflectors, beam splitters, and deflectors)