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)†
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
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.
Received: 11 August 2008
Revised: 25 August 2008
Accepted manuscript online:
Fund: Project supported by President
Foundation of Chinese Academy of Sciences and the National Natural
Science Foundation of China (Grant Nos 10775097 and 10874174).
Cite this article:
Fan Hong-Yi(范洪义) and Hu Li-Yun(胡利云) New approach for deriving density operator for describing continuum photodetection process 2009 Chin. Phys. B 18 1061
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