Nonclassicality of Photon-Added Displaced Thermal State via Quantum Phase-Space Distributions
Nonclassicality of Photon-Added Displaced Thermal State via Quantum Phase-Space Distributions
复制标题
通过量子相空间分布的光子附加位移热态的非经典性
DOI：
10.7566/jpsj.87.024001
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发表时间：
2018-01
影响因子：
1.7
通讯作者：
Wang Ji Suo
中科院分区：
文献类型：
--
作者：
Zhang Ran;Meng Xiang Guo;Du Chuan Xun;Wang Ji Suo
我们引入了一种新的非经典混合态，即加光子位移热态(PADTS)，并得到了归一化因子，它简单地与二元Hermite多项式有关。我们还通过考虑量子相空间分布讨论了PADTS的非经典性质。结果表明，当探测到的光子数与添加的光子数相等时，光子计数统计量的值最大，并且光子添加操作具有类似的调制效应，随着位移的增加。此外，对于特定的光子添加数，PADTS的Wigner函数的负体积取最大值。
We introduce a new kind of nonclassical mixed state generated by adding arbitrary photons to a displaced thermal state, i.e., the photon-added displaced thermal state (PADTS), and obtain the normalization factor, which is simply related to two-variable Hermite polynomials. We also discuss the nonclassicality of the PADTS by considering quantum phase-space distributions. The results indicate that the value of the photon count statistics is maximum when the number of detected photons is equal to the number of added photons, and that the photon-added operation has a similar modulation effect with increasing displacement. Moreover, the negative volume of the Wigner function for the PADTS takes a maximal value for a specific photon-added number.