Simulating spontaneously generated coherence in a four-level atomic system
Simulating spontaneously generated coherence in a four-level atomic system
复制标题
DOI：
10.1088/0953-4075/38/21/004
复制
发表时间：
2005-10
期刊：
影响因子：
--
通讯作者：
Aijun Li;Jin-yue Gao;Jin-Hui Wu;Lei Wang
中科院分区：
文献类型：
--
作者：
Aijun Li;Jin-yue Gao;Jin-Hui Wu;Lei Wang
研究了两个相干光场驱动的四能级原子系统的自发辐射特性。通过裸态图像的数值计算，我们发现了诸如极窄的峰和自发辐射猝灭等有趣的现象，这些现象在部分和完全修饰态图像中得到了很好的定性解释。特别地，这种相干驱动的原子系统在部分修饰态图像中具有两个相邻的能级，从而自发产生相干。使用我们考虑的方案，它是可行的，进行实验的基础上自发产生的相干性，因为所有严格的要求已被避免在裸态图片。
We study the spontaneous emission property of a four-level atomic system driven by two coherent fields. By numerical calculations in the bare state picture, we show that such interesting phenomena as extremely narrow peaks and spontaneous emission quenching can be realized, which are well understood by qualitative explanations in the partially and fully dressed state pictures. Especially, this coherently driven atomic system has two close-lying levels in the partially dressed state picture so that spontaneously generated coherence arises. Using our considered scheme it is feasible to carry out experiments based on spontaneously generated coherence because all rigorous requirements have been avoided in the bare state picture.