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arXiv 2004.00695quant-ph
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局部隐变量值无需优化程序

Local hidden variable values without optimization procedures

Dardo Goyeneche, Wojciech Bruzda, Ondřej Turek, Daniel Alsina, Karol Życzkowski

摘要:

计算贝尔不等式的局部隐变量(LHV)值是量子非定域性研究的核心问题。特别是,这个问题是表征给定场景的LHV多面体的第一步。本文建立了二分贝尔不等式的LHV值与矩阵过剩数的数学概念之间的关系。受发达的过剩理论的启发,我们得到了几个直接影响量子非局域性领域的结果。我们展示了无限的家庭的二分贝尔不等式的LHV值可以精确计算,而不需要解决任何优化问题,任何数量的测量设置。我们还发现了大量的测量设置紧贝尔不等式。

英文摘要:

The problem of computing the local hidden variable (LHV) value of a Bell inequality plays a central role in the study of quantum nonlocality. In particular, this problem is the first step towards characterizing the LHV polytope of a given scenario. In this work, we establish a relation between the LHV value of bipartite Bell inequalities and the mathematical notion of excess of a matrix. Inspired by the well developed theory of excess, we derive several results that directly impact the field of quantum nonlocality. We show infinite families of bipartite Bell inequalities for which the LHV value can be computed exactly, without needing to solve any optimization problem, for any number of measurement settings. We also find tight Bell inequalities for a large number of measurement settings.

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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