Acta Photonica Sinica, Volume. 41, Issue 9, 1098(2012)
Quantum Properties of the Binomial Field Interacting with a Cascade Threelevel Atom Beyond the Rotating Wave Approximation
The squeezing effect and atomic population of the binomial field interacting with a cascade three level atom are calculated accurately without rotatingwave approximation(without RWA) by using the complete quantum theory. The influences of the binomial state field parameter η on the field squeezing effect and the maximum photon number M of the binomial state field on the atomic population are considered. The results obtained from using the numerical method show that with increase of the binomial state field parameter η, the duration of the squeezing effect increases at first and then decreases. The little indentation oscillation appears in the evolution curves of the field squeezing effect, which is caused by virtual photon without RWA. The period of the revivalcollapse increases with the increase of the maximum photon number M, and the atomic population can not collapse completely in the collapse regime, but displays little indentation oscillation. In addition the influence of the withoutRWA terms on the quantum properties of the system are discussed.
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CONG Honglu, TANG Duochang, LIU Xuehua, CHENG Shuang, REN Xuezao. Quantum Properties of the Binomial Field Interacting with a Cascade Threelevel Atom Beyond the Rotating Wave Approximation[J]. Acta Photonica Sinica, 2012, 41(9): 1098
Received: Feb. 27, 2012
Accepted: --
Published Online: Aug. 31, 2012
The Author Email: Honglu CONG (conghonglu@yahoo.com.cn)