Opacity of electromagnetically induced transparency for quantum fluctuations.
Opacity of electromagnetically induced transparency for quantum fluctuations.
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DOI：
10.1103/physrevlett.98.033602
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发表时间：
2006-09
影响因子：
8.6
通讯作者：
P. Barberis-Blostein;M. Bienert
中科院分区：
文献类型：
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作者：
P. Barberis-Blostein;M. Bienert
我们分析了一对量子场在由三能级原子组成的Lambda组态介质中的传播。在探测光场处于压缩状态，原子呈现电磁诱导透明的情况下，我们计算了光场的稳态正交噪声谱。我们发现了初始量子性质在探测场和泵浦场之间的振荡转移，当这两个场具有相似的强度时，这种振荡转移最为明显。这意味着，传播后测量的量子态可以与初始态完全不同，即使场的平均值没有改变。
We analyze the propagation of a pair of quantized fields inside a medium of three-level atoms in a Lambda configuration. We calculate the stationary quadrature noise spectrum of the field, in the case where the probe field is in a squeezed state and the atoms show electromagnetically induced transparency. We find an oscillatory transfer of the initial quantum properties between the probe and pump fields which is most strongly pronounced when both fields have comparable intensities. This implies that the quantum state measured after propagation can be completely different from the initial state, even though the mean values of the field are unaltered.