| Localization of a Three-Level Cascade Atom via Resonant Absorption |
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| 引用本文： | 沈文炳 徐俊 胡响明. Localization of a Three-Level Cascade Atom via Resonant Absorption[J]. 中国物理快报, 2007, 24(9): 2583-2586 |
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| 作者姓名： | 沈文炳 徐俊 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 No 10574052. |
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| 摘 要： |
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| 关 键 词： | 原子 定位系统 共振 吸收作用 |
| 收稿时间： | 2007-05-29 |
| 修稿时间： | 2007-05-29 |
Localization of a Three-Level Cascade Atom via Resonant Absorption |
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| SHEN Wen-Bing,XU Jun,Hu Xiang-Ming. Localization of a Three-Level Cascade Atom via Resonant Absorption[J]. Chinese Physics Letters, 2007, 24(9): 2583-2586 |
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| Authors: | SHEN Wen-Bing XU Jun Hu Xiang-Ming |
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| Affiliation: | Department of Physics, Huazhong Normal University, Wuhan 430079 |
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| Abstract: | We show that it is possible to localize a three-level cascade atom under the resonance condition when it passes through a standing-wave field. The localization peaks appear at the nodes of the standing-wave field, the detecting probability is 50% in the subwavelength domain, and the peaks are narrower on the resonance than the off- resonance. The absorption is the same as that in the usual two-level medium at the nodes and is greatly suppressed outside the nodes due to the Autler-Townes splitting. This is in sharp contrast to the lambda scheme, in which the localization is impossible under the same resonance condition due to the depletion of population of the initial state by the probe field at the nodes and the electromagnetically induced transparency outside the nodes. |
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| Keywords: | 42.50.Gy 32.80.Qk 32.80.Lg |
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