Quantitative analysis of the transient response of the refractive index to conditions of electromagnetically induced transparency
Quantitative analysis of the transient response of the refractive index to conditions of electromagnetically induced transparency
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DOI：
10.1103/physreva.85.013820
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发表时间：
2012-01
影响因子：
2.9
通讯作者：
F. Meinert;C. Basler;A. Lambrecht;S. Welte;H. Helm
中科院分区：
文献类型：
--
作者：
F. Meinert;C. Basler;A. Lambrecht;S. Welte;H. Helm
以Rb的D1线为例，分析了影响电磁感应透明瞬态响应的实验参数。在缓冲气体蒸气室中观察到超过几毫秒的时间尺度上的量子相干自由感应衰减。测试了量子主方程的数值解和近似解析解，并对瞬态时间尺度、功率展宽、共振对比度和频移进行了绝对比较。采用两个主动锁相激光器。研究了非完全关联激光器的红相噪声效应。
At the example of the D1 line of Rb we analyze the experimental parameters which control the transient response of electromagnetically-induced transparency. Quantum coherent free induction decay is observed on timescales exceeding several milliseconds in a buffer gas vapor cell. Numerical solutions of the quantum master equation and approximate analytical solutions are tested and absolute comparisons of the transient timescales, the power broadening, the resonance contrast and frequency shifts are made. Two actively phase-locked lasers are employed. Effects of not fully correlated laser redphase noise are studied.