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Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom |
| WANG Fei;HU Xiang-Ming |
| Department of Physics, Huazhong Normal University, Wuhan 430079 |
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| Cite this article: |
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WANG Fei, HU Xiang-Ming 2007 Chin. Phys. Lett. 24 432-435 |
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Abstract We examine the intensity correlation functions of the two fluorescent fields that are emitted from the top and middle states of a doubly driven three-level atom in the cascade configuration. Novel interference effects are shown. (i) Both of the fluorescent fields have anticorrelations which can exist for long times when the applied fields are on the two-photon resonance and far off one-photon resonances. (ii) Both of the fluorescent fields have strong correlations when the applied fields are far off one- and two-photon resonances. In particular, the extremely strong correlation occurs for the photons emitted from the top state. The above phenomena are traced to the multiple interference mechanisms.
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| Keywords:
42.50.Lc
42.50.Ct
32.50.+d
32.80.Qk
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Received: 11 September 2006
Published: 24 February 2007
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| PACS: |
42.50.Lc
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(Quantum fluctuations, quantum noise, and quantum jumps)
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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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32.50.+d
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(Fluorescence, phosphorescence (including quenching))
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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