Certification of Non-Gaussian States with Operational Measurements

Ulysse Chabaud, G. Roeland, M. Walschaers, F. Grosshans, V. Parigi, D. Markham, N. Treps
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引用次数: 20

Abstract

We derive a theoretical framework for the experimental certification of non-Gaussian features of quantum states using double homodyne detection. We rank experimental non-Gaussian states according to the recently defined stellar hierarchy and we propose practical Wigner negativity witnesses. We simulate various use-cases ranging from fidelity estimation to witnessing Wigner negativity. Moreover, we extend results on the robustness of the stellar hierarchy of non-Gaussian states. Our results illustrate the usefulness of double homodyne detection as a practical measurement scheme for retrieving information about continuous variable quantum states.
具有运算测量的非高斯态的证明
我们推导了一个用双同差检测验证量子态非高斯特征的理论框架。我们根据最近定义的恒星层次对实验非高斯态进行了排序,并提出了实际的维格纳负性见证。我们模拟了从保真度估计到见证Wigner消极性的各种用例。此外,我们扩展了非高斯状态的恒星层次结构的鲁棒性。我们的结果说明了双同差检测作为一种实用的测量方案的有效性,用于检索有关连续可变量子态的信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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