Evolution of Coherent Light in a Simple Polariton Model
WANG Fa-Qiang, ZHANG Zhi-Ming
Lab of Photonic Information Technology, School of Information andPhotoelectronic Science and Engineering, South China Normal University,Guangzhou 510006
Evolution of Coherent Light in a Simple Polariton Model
WANG Fa-Qiang;ZHANG Zhi-Ming
Lab of Photonic Information Technology, School of Information andPhotoelectronic Science and Engineering, South China Normal University,Guangzhou 510006
摘要We study the phase evolution behaviour of coherent light interacting with phonons initially in thermal equilibrium at temperature T in terms of phase distribution probability. It is shown that the phase not only shifts but also diffuses. The phase distribution broadens and narrows periodically with time. There is a threshold in the variation of the width of phase distribution as a function of coupling coefficient in the detuning case for fixed temperature. The phase diffusion changes rapidly with temperature for coupling coefficient above the threshold while it changes little with temperature for coupling coefficient below the threshold.
Abstract：We study the phase evolution behaviour of coherent light interacting with phonons initially in thermal equilibrium at temperature T in terms of phase distribution probability. It is shown that the phase not only shifts but also diffuses. The phase distribution broadens and narrows periodically with time. There is a threshold in the variation of the width of phase distribution as a function of coupling coefficient in the detuning case for fixed temperature. The phase diffusion changes rapidly with temperature for coupling coefficient above the threshold while it changes little with temperature for coupling coefficient below the threshold.
(Quantum description of interaction of light and matter; related experiments)
引用本文:
WANG Fa-Qiang;ZHANG Zhi-Ming. Evolution of Coherent Light in a Simple Polariton Model[J]. 中国物理快报, 2008, 25(3): 821-824.
WANG Fa-Qiang, ZHANG Zhi-Ming. Evolution of Coherent Light in a Simple Polariton Model. Chin. Phys. Lett., 2008, 25(3): 821-824.
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2008, Vol. 25 
