Nonlinear quantum beats of propagating polaritons.
Nonlinear quantum beats of propagating polaritons.
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传播极化子的非线性量子拍。
DOI：
10.1103/physrevlett.70.327
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发表时间：
1993
影响因子：
8.6
通讯作者：
Hvam
中科院分区：
文献类型：
--
作者：
Pantke;Schillak;Razbirin;Lyssenko;Hvam
在四波混频实验中，当激发CdSe中n =1和n =2激子之间的上极化子分支时，我们观察到非线性信号的相关迹线出现了非等距振荡。考虑到三阶非线性极化的传播干扰效应，定性和定量地描述了量子拍，并确定了激子极化的均匀阻尼
We observe nonequidistant oscillations in the correlation trace of the nonlinear signal in a four-wave mixing experiment when exciting the upper polariton branch between the A n =1 and the A n =2 excitons in CdSe. The quantum beats are described qualitatively and quantitatively taking into account propagation interference effects on the third-order nonlinear polarization, and the homogeneous dampings of the exciton polaritons are determined