Higher-order nonclassical effects in fluctuating-loss channels
Higher-order nonclassical effects in fluctuating-loss channels
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DOI：
10.1103/physreva.95.012324
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发表时间：
2016-10
影响因子：
2.9
通讯作者：
M. Bohmann;J. Sperling;A. Semenov;W. Vogel
中科院分区：
文献类型：
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作者：
M. Bohmann;J. Sperling;A. Semenov;W. Vogel
研究了大气起伏损耗信道中高阶非经典性和纠缠准则的演化。通过制定的矩量矩阵的输入输出关系，我们调查的影响，这样的渠道上相应的量子化标准。本文推广了我们以前关于高斯纠缠的工作[M. Bohmann等人，Phys. Rev. A 94，010302（R）（2016）]不仅利用了基于二阶的场景，而且还提供了对非高斯和多模辐射场中经历波动衰减的非经典性和纠缠的详细研究。也就是说，详细研究了标准和状态的各种示例，意外效果，例如，发现了压缩转移对相干位移的依赖性，并证明了非高斯纠缠比高斯纠缠更能抵抗大气损耗.此外，我们提出了一种检测方案，用于测量通过大气传播后的考虑时刻。因此，我们的研究结果可能有助于开发，改进和优化非高斯量子光源在自由空间量子通信中的应用。
We study the evolution of higher-order nonclassicality and entanglement criteria in atmospheric fluctuating-loss channels. By formulating input-output relations for the matrix of moments, we investigate the influence of such channels on the corresponding quantumness criteria. This generalization of our previous work on Gaussian entanglement [M. Bohmann et al., Phys. Rev. A 94, 010302(R) (2016)] not only exploits second-order-based scenarios, but it also provides a detailed investigation of nonclassicality and entanglement in non-Gaussian and multimode radiation fields undergoing a fluctuating attenuation. That is, various examples of criteria and states are studied in detail, unexpected effects, e.g., the dependency of the squeezing transfer on the coherent displacement, are discovered, and it is demonstrated that non-Gaussian entanglement can be more robust against atmospheric losses than Gaussian one. Additionally, we propose a detection scheme for measuring the considered moments after propagation through the atmosphere. Therefore, our results may help to develop, improve, and optimize non-Gaussian sources of quantum light for applications in free-space quantum communication.