| Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom |
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| 引用本文： | 王飞 胡响明. Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom[J]. 中国物理快报, 2007, 24(2): 432-435 |
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| 作者姓名： | 王飞 胡响明 |
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| 作者单位： | Department of Physics, Huazhong Normal University, Wuhan 430079 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 60378008 and 10574052. |
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| 摘 要： | 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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| 关 键 词： | 原子 干扰机制 强度 相关函数 |
| 收稿时间： | 2006-09-11 |
| 修稿时间： | 2006-09-11 |
Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom |
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| WANG Fei,HU Xiang-Ming. Two-Time Intensity Correlations and Multiple Interference Mechanisms in a Driven Cascade Atom[J]. Chinese Physics Letters, 2007, 24(2): 432-435 |
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| Authors: | WANG Fei HU Xiang-Ming |
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| Affiliation: | Department of Physics, Huazhong Normal University, Wuhan 430079 |
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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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