| 三能级原子系统中单光子频率失谐对光减速的影响 |
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| 引用本文： | 王波,李淑静,常宏,武海斌,谢常德,王海. 三能级原子系统中单光子频率失谐对光减速的影响[J]. 物理学报, 2005, 54(9): 4136-4140 |
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| 作者姓名： | 王波 李淑静 常宏 武海斌 谢常德 王海 |
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| 作者单位： | (1); (2)量子光学与光量子器件国家重点实验室，山西大学光电研究所，太原 030006 |
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| 基金项目： | 国家自然科学基金(批准号：60325414和60238010); 山西省自然科学基金(批准号：2001103 0 和20031007); 山西省归国留学人员基金资助的课题. |
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| 摘 要： | 在Λ型三能级Rb原子介质中，观察到了由电磁感应透明（EIT）效应导致的光减速现象并测 量了光延迟对单光子频率失谐量的依赖关系. 结果表明，由于多普勒展宽效应的存在，在单 光子频率失谐±600MHz的范围内，光减速效应较为显著. 在考虑多谱勒频移的情况下，数值 计算了光延迟随单光子频率失谐量的变化曲线，实验结果与理论曲线很好地符合. 这一研 究结果为利用单光子频率失谐控制光的群速度提供了理论与实验参考.关键词：光减速电磁感应透明多普勒展宽
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| 关 键 词： | 光减速 电磁感应透明 多普勒展宽 |
| 文章编号： | 1000-3290/2005/54(09)/4136-05 |
| 收稿时间： | 2004-11-11 |
| 修稿时间： | 2004-11-112005-01-13 |
Effect of one-photon detuning on light speed reduction in a three-level Λ-type atomic system |
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| Wang Bo,LI Shu-jing,Chang Hong,WU Hai-bin,XIE Chang-de,Wang Hai. Effect of one-photon detuning on light speed reduction in a three-level Λ-type atomic system[J]. Acta Physica Sinica, 2005, 54(9): 4136-4140 |
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| Authors: | Wang Bo LI Shu-jing Chang Hong WU Hai-bin XIE Chang-de Wang Hai |
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| Abstract: | We have observed the reduction of group velocity of light via electromagnetically induced transparency (EIT) and measured the dependence of pulse delay on the one-photon detuning in a three-level Λ-type atomic system. The results show that due to the effect of Doppler broadening the light speed reduction is signif icant in a range of ±600MHz one-photon detuning. Under the condition of consid ering the Doppler shift of frequency, the pulse delay as a function of the one-p hoton detuning is numerically calculated. The experimental measurements are in g ood agreement with the theoretical results. These researches provide theoretical and experimental references for controlling the group velocity of light by mean s of one-photon detuning. |
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| Keywords: | light speed reduction electromagnetically induced transparency Doppler broadening |
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