Photon-varied quantum states: Unified characterization
Photon-varied quantum states: Unified characterization
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DOI：
10.1103/physreva.108.022425
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发表时间：
2023-08
影响因子：
2.9
通讯作者：
Stefano Guerrini;M. Win;A. Conti
中科院分区：
文献类型：
--
作者：
Stefano Guerrini;M. Win;A. Conti
介绍了光子变化量子态，它是对光子加、减运算得到的非经典量子态的推广。我们提供了一个统一的艾德表征PVQS的特征函数，准概率分布，Fock表示，和Mandel Q参数。在变光子高斯态（PVGS）的特殊情况下，特征函数和准概率分布被发现是一个简单的正则乘积结构。对于PVGS，也得到了拟概率分布为负的充要条件.统一的艾德表征使得能够设计和分析利用PVQS的非高斯性质的量子系统。
This paper introduces photon-varied quantum states (PVQSs), which generalize the nonclassical states obtained via photon addition or subtraction operations. We provide a unified characterization of PVQSs in terms of characteristic function, quasiprobability distribution, Fock representation, and Mandel Q parameter. In the special case of photon-varied Gaussian states (PVGSs), the characteristic functions and the quasiprobability distributions are found to be in a simple canonical product structure. Necessary and sufficient conditions for the negativity of the quasiprobability distributions are also obtained for PVGSs. The unified characterization enables the design and analysis of quantum systems that exploit the non-Gaussian properties of PVQSs.