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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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| Cite this article: |
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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.
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| Keywords:
03.65.Vf
71.36.+c
42.50.Ct
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Received: 06 September 2007
Published: 27 February 2008
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| PACS: |
03.65.Vf
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(Phases: geometric; dynamic or topological)
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71.36.+c
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(Polaritons (including photon-phonon and photon-magnon interactions))
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42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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