Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model

doi:10.1088/1674-1056/19/1/014206

中国物理B ›› 2010, Vol. 19 ›› Issue (1): 14206-014206.doi: 10.1088/1674-1056/19/1/014206

Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model

Ahamd Muhammad Ashfaq¹, 康冬鹏², 廖庆洪², 王月媛², 刘树田²

(1)COMSATS Institute of Information Technology, Department of Physics, Lahore 54000, Pakistan; (2)Department of Physics, Harbin Institute of Technology, Harbin 150001, China

收稿日期:2009-03-21 修回日期:2009-06-01 出版日期:2010-01-15 发布日期:2010-01-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10674038 and 10604042), and the National Basic Research Program of China (Grant No. 2006CB302901).

Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model

Kang Dong-Peng(康冬鹏)^a), Liao Qing-Hong(廖庆洪)^a), Ahamd Muhammad Ashfaq^b), Wang Yue-Yuan(王月媛)^a), and Liu Shu-Tian(刘树田)^a)†

^a Department of Physics, Harbin Institute of Technology, Harbin 150001, China; ^b COMSATS Institute of Information Technology, Department of Physics, Lahore 54000, Pakistan

Received:2009-03-21 Revised:2009-06-01 Online:2010-01-15 Published:2010-01-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10674038 and 10604042), and the National Basic Research Program of China (Grant No. 2006CB302901).

摘要/Abstract

摘要： The entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model is investigated. For comparison, we also study the corresponding variance squeezing and atomic inversion. Analytical results show that entropy squeezing is preferable to variance squeezing for zero atomic inversion. Moreover, for initial conditions of the system the relation between squeezing and photon transition number is also discussed. This provides a theoretical approach to finding out the optimal entropy squeezing.

Abstract: The entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model is investigated. For comparison, we also study the corresponding variance squeezing and atomic inversion. Analytical results show that entropy squeezing is preferable to variance squeezing for zero atomic inversion. Moreover, for initial conditions of the system the relation between squeezing and photon transition number is also discussed. This provides a theoretical approach to finding out the optimal entropy squeezing.

Key words: Jaynes--Cumming model, entropy squeezing, variance squeezing, atomic inversion

中图分类号: (Quantum state engineering and measurements)

42.50.Dv

32.80.-t (Photoionization and excitation)

康冬鹏, 廖庆洪, Ahamd Muhammad Ashfaq, 王月媛, 刘树田. Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model[J]. 中国物理B, 2010, 19(1): 14206-014206.

Kang Dong-Peng(康冬鹏), Liao Qing-Hong(廖庆洪), Ahamd Muhammad Ashfaq, Wang Yue-Yuan(王月媛), and Liu Shu-Tian(刘树田). Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model[J]. Chin. Phys. B, 2010, 19(1): 14206-014206.

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Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model

Entropy squeezing of an atom with a k-photon in the Jaynes--Cummings model

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