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arXiv 2201.11439quant-phphysics.optics
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非高斯量子操纵的零差探测

Homodyne detection of non-Gaussian quantum steering

Carlos E. Lopetegui, Manuel Gessner, Matteo Fadel, Nicolas Treps, Mattia Walschaers

摘要:

量子关联是当前量子技术发展的核心。适用于连续变量非高斯态的纠缠和转向的认证协议是稀缺的,并且从实验的角度来看通常要求很高。我们提出了一个协议的基础上,见证一般连续变量二分态转向Fisher信息,通过零差检测。它被证明是相关的检测非高斯转向的情况下,证人基于高斯特征,如协方差矩阵显示失败。

英文摘要:

Quantum correlations are at the core of current developments in quantum technologies. Certification protocols of entanglement and steering, suitable for continuous-variable non-Gaussian states are scarce and generally highly demanding from an experimental point of view. We propose a protocol based on Fisher information for witnessing steering in general continuous-variable bipartite states, through homodyne detection. It proves to be relevant for the detection of non-Gaussian steering in scenarios where witnesses based on Gaussian features like the covariance matrix are shown to fail.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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