Quantum mechanical photoncount formula derived by entangled state representation

doi:10.1088/1674-1056/20/8/084203

中国物理B ›› 2011, Vol. 20 ›› Issue (8): 84203-084203.doi: 10.1088/1674-1056/20/8/084203

Quantum mechanical photoncount formula derived by entangled state representation

L. C. Kwek¹, 胡利云², 王资生², 范洪义³

(1)Centre for Quantum Technologies, National University of Singapore, Singapore 117543; (2)College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; (3)Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China

收稿日期:2011-01-16 修回日期:2011-03-09 出版日期:2011-08-15 发布日期:2011-08-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11047133 and 60967002), the Key Program Foundation of Ministry of Education of China (Grant No. 210115), and the Research Foundation of the Education Department of Jiangxi Province of China (Grant Nos. GJJ10097 and GJJ10404), and the Natural Science Foundation of Jiangxi Province of China (Grant No. 2010GQW0027).

Quantum mechanical photoncount formula derived by entangled state representation

Hu Li-Yun(胡利云)^a)†, Wang Zi-Sheng(王资生)^a), L. C. Kwek^b), and Fan Hong-Yi(范洪义)^c)

^a College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; ^b Centre for Quantum Technologies, National University of Singapore, Singapore 117543; ^c Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China

Received:2011-01-16 Revised:2011-03-09 Online:2011-08-15 Published:2011-08-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11047133 and 60967002), the Key Program Foundation of Ministry of Education of China (Grant No. 210115), and the Research Foundation of the Education Department of Jiangxi Province of China (Grant Nos. GJJ10097 and GJJ10404), and the Natural Science Foundation of Jiangxi Province of China (Grant No. 2010GQW0027).

摘要/Abstract

摘要： 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 Laguerre-Gaussian function with a characteristic function, Wigner function, Q-function and P-function, respectively.

关键词: photo-counting distribution, entangled state representation

Abstract: 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 Laguerre-Gaussian function with a characteristic function, Wigner function, Q-function and P-function, respectively.

Key words: photo-counting distribution, entangled state representation

中图分类号: (Quantum optics)

42.50.-p

03.65.-w (Quantum mechanics)

胡利云, 王资生, L. C. Kwek, 范洪义. Quantum mechanical photoncount formula derived by entangled state representation[J]. 中国物理B, 2011, 20(8): 84203-084203.

Hu Li-Yun(胡利云), Wang Zi-Sheng(王资生), L. C. Kwek, and Fan Hong-Yi(范洪义). Quantum mechanical photoncount formula derived by entangled state representation[J]. Chin. Phys. B, 2011, 20(8): 84203-084203.

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Quantum mechanical photoncount formula derived by entangled state representation

Quantum mechanical photoncount formula derived by entangled state representation

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