对非高斯运算产生的纠缠进行计量检测

IF 2.8 2区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
David Barral, Mathieu Isoard, Giacomo Sorelli, Manuel Gessner, Nicolas Treps and Mattia Walschaers
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引用次数: 0

摘要

纠缠和非高斯性是大量量子光学协议必不可少的物理资源。非高斯纠缠是量子计算优势不可或缺的因素,在许多量子信息协议中,非高斯纠缠优于高斯纠缠。非高斯纠缠的表征是一个关键问题,因为它通常对资源的要求很高。我们提出了一种基于费雪信息的简单协议,用于见证一类重要的非高斯纠缠态:光子折射态中的纠缠。我们证明了我们的协议适用于检测由多个光子减缩产生的非高斯纠缠,并且通过同调检测在实验上是可行的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Metrological detection of entanglement generated by non-Gaussian operations
Entanglement and non-Gaussianity are physical resources that are essential for a large number of quantum-optics protocols. Non-Gaussian entanglement is indispensable for quantum-computing advantage and outperforms its Gaussian counterparts in a number of quantum-information protocols. The characterization of non-Gaussian entanglement is a critical matter as it is in general highly demanding in terms of resources. We propose a simple protocol based on the Fisher information for witnessing entanglement in an important class of non-Gaussian entangled states: photon-subtracted states. We demonstrate that our protocol is relevant for the detection of non-Gaussian entanglement generated by multiple photon-subtraction and that it is experimentally feasible through homodyne detection.
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来源期刊
New Journal of Physics
New Journal of Physics 物理-物理:综合
CiteScore
6.20
自引率
3.00%
发文量
504
审稿时长
3.1 months
期刊介绍: New Journal of Physics publishes across the whole of physics, encompassing pure, applied, theoretical and experimental research, as well as interdisciplinary topics where physics forms the central theme. All content is permanently free to read and the journal is funded by an article publication charge.
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