| Original Articles |
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Nonlinear Theory of Light Speed Reduction in a Three-Level
Λ System |
| WANG De-Zhong1,2;LI Dai-Jun1,2;LIU Xia-J1,2;LI Shi-Qun1,2,3;WANG Yu-Zhu4 |
| 1Department of Physics, Tsinghua University, Beijing 100084
2Key Laboratory for Quantum Information and Measurements, MOE, P. R. China
3Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084
4Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
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| Cite this article: |
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WANG De-Zhong, LI Dai-Jun, LIU Xia-J et al 2001 Chin. Phys. Lett. 18 1067-1068 |
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Abstract We present a nonlinear theory of light velocity reduction in a three-level Λ system based on electromagnetically induced transparency. Analysis shows that probe field propagates with a velocity that is quite strongly dependent on its intensity instead of being merely approximately dependent on the coupling intensity. Moreover, the minimum group velocity of the probe field is analytically given for a given input power.
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| Keywords:
42.50.Ct
42.50.Gy
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Published: 01 August 2001
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| PACS: |
42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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