Hermite polynomial excited squeezed vacuum state: Generation and nonclassical properties
Hermite polynomial excited squeezed vacuum state: Generation and nonclassical properties
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埃尔米特多项式激发压缩真空态：生成和非经典性质
DOI：
10.1016/j.ijleo.2017.05.061
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发表时间：
2017
期刊：
影响因子：
3.1
通讯作者：
Hu LY
中科院分区：
文献类型：
--
作者：
Xu Shuang;Xu Xue-Xiang;Liu Cun-Jin;Zhang Hao-Liang;Hu Li-Yun;Xu XX;Hu LY
我们提出了一种通过使用参量放大器过程和条件测量来生成一种新型非高斯态——埃尔米特多项式激发压缩真空态的理论方案。具体来说，将两种不同的单模压缩真空态注入参量放大器的信号端口和闲频端口，并在闲频输出端口检测到m光子，然后在信号端口产生新的非高斯态。发现其归一化因子与对应于此类事件的成功概率的勒让德多项式有关。我们根据光子数分布、亚泊松分布、反聚束效应、正交压缩效应和维格纳函数研究了非经典性质。结果表明，通过调整相互作用参数可以产生多种非经典现象。我们的研究可为实验产生非经典态提供理论参考。
We proposed a theoretical scheme for generating a new kind of non-Gaussian state—Hermite polynomial excited squeezed vacuum states—by using parametric amplifier process and conditional measurement. Specially, two different single-mode squeezed vacuum states were injected into the signal and idler ports of parametric amplifier andm-photon was detected in idler output port, then the new non-Gaussian state is generated in signal port. It's normalization factor is found to be related with Legendre polynomials that corresponds to the success probability of such event. We investigated the nonclassical properties according to photon-number distribution, sub-Poissonian distribution, anti-bunching effect, quadrature squeezing effect, and Wigner function. It is shown that there is a wide range of nonclassical phenomena created by tuning the interaction parameters. Our study may provide a theoretical reference to generate nonclassical state for experiment.