论文标题
在高斯通道的影响下，非高斯状态的量子性表征
Characterization of Quantumness of non-Gaussian states under the influence of Gaussian channel
论文作者
论文摘要
在这项工作中，研究了嘈杂的高斯通道对广泛的非高斯输入状态的影响。通过研究相应的光子统计和准概率分布来开发国家的非经典性质，无论是输入还是输出。发现与光子减法情况相比，光子添加具有更健壮的量子机械性能。噪声参数的阈值对应于从部分负（W和P）和零（Q）到完全确定的相位空间中心的过渡，不仅取决于该州的平均热光子的平均数量，还取决于挤压参数。此外，观察到，可以通过添加光子来进一步增强KTH-number过滤热状态的非经典性。
The impact of a noisy Gaussian channel on a wide range of non-Gaussian input states is studied in this work. The nonclassical nature of the states, both input and output, is developed by studying the corresponding photon statistics and quasi-probability distributions. It is found that photon addition has more robust quantum mechanical properties as compared to the photon subtraction case. The threshold value of the noise parameter corresponding to the transition from partial negative (W and P ) and zero (Q) to completely positive definite, at the center of phase space, depends not only on the average number of thermal photons in the state, but also on the squeezing parameter. In addition it is observed that the nonclassicality of the kth-number filtrated thermal state could be further enhanced by adding photon(s).
