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

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

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.

Keywords: Jaynes--Cumming model entropy squeezing variance squeezing atomic inversion

Received: 21 March 2009
Revised: 01 June 2009
Accepted manuscript online:

PACS:	42.50.Dv	(Quantum state engineering and measurements)
	32.80.-t	(Photoionization and excitation)

Fund: 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).

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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 2010 Chin. Phys. B 19 014206

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