Chin. Phys. Lett.  2008, Vol. 25 Issue (3): 821-824    DOI:
Original Articles |
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
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WANG Fa-Qiang, ZHANG Zhi-Ming 2008 Chin. Phys. Lett. 25 821-824
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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.
Keywords: 03.65.Vf      71.36.+c      42.50.Ct     
Received: 06 September 2007      Published: 27 February 2008
PACS:  03.65.Vf (Phases: geometric; dynamic or topological)  
  71.36.+c (Polaritons (including photon-phonon and photon-magnon interactions))  
  42.50.Ct (Quantum description of interaction of light and matter; related experiments)  
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Articles by authors
WANG Fa-Qiang
ZHANG Zhi-Ming
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