Control of spontaneous emission from a coherently driven four-level atom
Control of spontaneous emission from a coherently driven four-level atom
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DOI：
10.1103/physreva.72.023802
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发表时间：
2005-08
影响因子：
2.9
通讯作者：
Jin-Hui Wu;Aijun Li;Yue Ding;Yan-Chun Zhao;Jin-yue Gao
中科院分区：
文献类型：
--
作者：
Jin-Hui Wu;Aijun Li;Yue Ding;Yan-Chun Zhao;Jin-yue Gao
我们研究了相干驱动的四能级原子的自发辐射特性，发现了一些有趣的现象，如荧光猝灭、谱线变窄、谱线增强和谱线消除。这些现象可以在实验中观察到，因为这里不要求具有非正交偶极矩的近简并能级的严格条件。定性地，这些现象可以归因于裸态图像中相互竞争的自发衰变通道之间的量子干涉，或者是修饰态图像中两个相邻能级之间的自发产生的相干。
We study the spontaneous-emission properties of a coherently driven four-level atom, and show a few interesting phenomena such as fluorescence quenching, spectral-line narrowing, spectral-line enhancement, and spectral-line elimination. These phenomena can be observed in experiment since the rigorous condition of near-degenerate levels with nonorthogonal dipole moments is not required here. Qualitatively, these phenomena can be attributed to the quantum interference between competitive spontaneous-decay channels in the bare-state picture or the spontaneously generated coherence between two close-lying levels in the dressed-state picture.