Synthesis of Hermite polynomial excited squeezed vacuum states from two separate single-mode squeezed vacuum states
Synthesis of Hermite polynomial excited squeezed vacuum states from two separate single-mode squeezed vacuum states
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DOI：
10.1016/j.optcom.2015.07.083
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发表时间：
2015-12
影响因子：
2.4
通讯作者：
Hao-liang Zhang;Hongchun Yuan;L. Hu;Xue-xiang Xu
中科院分区：
文献类型：
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作者：
Hao-liang Zhang;Hongchun Yuan;L. Hu;Xue-xiang Xu
提出了一种用于生成埃尔米特多项式激发压缩真空态（HPESVS，非高斯量子态）的投影合成方案。将两个独立的单模压缩真空态注入分束器，并对一个输出通道中的光子进行计数（条件测量或后检测），另一个通道中的条件态就是 HPESVS。通过分析获得与勒让德多项式相关的成功概率并进行详细的数值分析。为了展示这种条件状态的非经典效应，我们还分别提出了光子数分布、亚泊松分布、反聚束效应、正交挤压效应和维格纳函数。结果表明，通过调整相互作用参数，可以创建多种非经典现象。
A projection synthesis scheme for generating Hermite polynomial excited squeezed vacuum states (HPESVSs, non-Gaussian quantum states) is proposed. Injecting two separate single-mode squeezed vacuum states into a beam splitter and counting the photons in one of the output channels (conditional measurement or post-detection), the conditional state in the other channel is just the HPESVS. The success probability, related to a Legendre polynomial form, is obtained analytically and analyzed numerically in detail. To exhibit the nonclassical effects of this conditional state, we also present the photon-number distribution, sub-Poissionian distribution, anti-bunching effect, quadrature squeezing effect, and Wigner function, respectively. The results show that by tuning the interaction parameters, a wide range of nonclassical phenomena can be created.