中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1061-1064.doi: 10.1088/1674-1056/18/3/037

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New approach for deriving density operator for describing continuum photodetection process

胡利云1, 范洪义2   

  1. (1)Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China; (2)Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China;Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2008-08-11 修回日期:2008-08-25 出版日期:2009-03-20 发布日期:2009-03-20
  • 基金资助:
    Project supported by President Foundation of Chinese Academy of Sciences and the National Natural Science Foundation of China (Grant Nos 10775097 and 10874174).

New approach for deriving density operator for describing continuum photodetection process

Fan Hong-Yi(范洪义)a)b) and Hu Li-Yun(胡利云)a)†   

  1. a Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China; b Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2008-08-11 Revised:2008-08-25 Online:2009-03-20 Published:2009-03-20
  • Supported by:
    Project supported by President Foundation of Chinese Academy of Sciences and the National Natural Science Foundation of China (Grant Nos 10775097 and 10874174).

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摘要： By introducing the two-mode entangled state representation <η| whose one mode is a fictitious one accompanying the system mode, this paper presents a new approach for deriving density operator for describing continuum photodetection process.

关键词: photodetection, entangled state representation, density operator

Abstract: By introducing the two-mode entangled state representation $\langle \eta|$ whose one mode is a fictitious one accompanying the system mode, this paper presents a new approach for deriving density operator for describing continuum photodetection process.

Key words: photodetection, entangled state representation, density operator

中图分类号:  (Entanglement and quantum nonlocality)

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