Quantum mechanical photoncount formula derived by entangled state representation

By introducing the thermo entangled state representation, we derive four new photocount distribution formulas for a given light field density operator. It is shown that these new formulas, which are convenient to calculate the photocount, can be expressed as integrations over a Laguree Gaussian func...

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 8; pp. 216 - 221
Main Authors Hu, Li-Yun, Wang, Zi-Sheng, Fan, Hong-Yi
Format Journal Article
LanguageEnglish
Published 01.08.2011
Subjects
Density
Entangled states
Mathematical analysis
Operators
Quantum mechanics
Representations
Wigner函数
分布公式
功能集成
密度算符
机械
热纠缠态
特征函数
量子纠缠态
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/8/084203

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Summary:By introducing the thermo entangled state representation, we derive four new photocount distribution formulas for a given light field density operator. It is shown that these new formulas, which are convenient to calculate the photocount, can be expressed as integrations over a Laguree Gaussian function with a characteristic function, Wigner function, Q-function and P-function, respectively.
Bibliography:photo-counting distribution, entangled state representation
By introducing the thermo entangled state representation, we derive four new photocount distribution formulas for a given light field density operator. It is shown that these new formulas, which are convenient to calculate the photocount, can be expressed as integrations over a Laguree Gaussian function with a characteristic function, Wigner function, Q-function and P-function, respectively.
11-5639/O4
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/8/084203