| Electromagnetically induced transparency and controllable group velocity in a five-level atomic system |
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| 作者姓名： | 金黎慧 龚尚庆 钮月萍 金石琦 |
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| 作者单位： | State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，State Key Laboratory of High Field Laser Physics，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，State Key Laboratory of High Field Laser Physics，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，State Key Laboratory of High Field Laser Physics，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800 |
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| 基金项目： | This work was supported by the National Nature Science Foundation of China (No. 60478002)
the Natural Science Key Foundation of Shanghai (No. 04JC14036 and No. 05DJ14003). |
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| 摘 要： | The optical properties of a five-level atomic system composed of a A-type four-level atomic and a tripod four-level atomic systems are investigated. It is found that the behaviors of electromagnetically induced transparency (EIT) and group velocity can be controlled by choosing appropriate parameters with the interacting dark resonances. In particular, when all the fields are on resonance, the slow light at the symmetric transparency windows with a much broader EIT width is obtained by tuning the intensity of the coupling field in comparison with its sub-system, which provides potential applications in quantum storage and retrieval of light.
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