Barberis-Blostein P, Bienert M
Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Ap. Postal 48-3, 62251 Cuernavaca, Morelos, Mexico.
Phys Rev Lett. 2007 Jan 19;98(3):033602. doi: 10.1103/PhysRevLett.98.033602. Epub 2007 Jan 18.
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.
我们分析了处于拉姆达构型的三能级原子介质中一对量子化场的传播情况。在探测场处于压缩态且原子呈现电磁诱导透明的情况下，我们计算了场的稳态正交噪声谱。我们发现，当初始量子特性在探测场和泵浦场之间振荡转移时，在两个场强度相当的情况下最为显著。这意味着，即使场的平均值未改变，传播后测量的量子态也可能与初始态完全不同。
