基于非高斯操作产生的纠缠的计量学探测
量子物理
2024-01-17 v2 光学
摘要
纠缠和非高斯性是众多量子光学协议所必需的物理资源。非高斯纠缠对于量子计算优势不可或缺，并且在若干量子信息协议中优于其高斯对应物。非高斯纠缠的表征是一个关键问题，因为它通常在资源方面要求极高。我们提出了一种基于 Fisher 信息的简单协议，用于见证一类重要的非高斯纠缠态——光子减去态中的纠缠。我们证明了我们的协议与探测由多次光子减去产生的非高斯纠缠相关，并且它通过零差探测在实验上可行。
引用
@article{arxiv.2301.03909,
title = {Metrological detection of entanglement generated by non-Gaussian operations},
author = {David Barral and Mathieu Isoard and Giacomo Sorelli and Manuel Gessner and Nicolas Treps and Mattia Walschaers},
journal= {arXiv preprint arXiv:2301.03909},
year = {2024}
}
备注
We have corrected errors found in Figures 8 and 9 of the previous version and improved the manuscript with an analysis of the entanglement produced by multi-photon subtraction. We have adapted the main text, abstract and title correspondingly. 16 pages, 14 figures