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arXiv 2202.13993quant-phmath-phmath.MP
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量子相容性的张量范数方法

A tensor norm approach to quantum compatibility

Andreas Bluhm, Ion Nechita

摘要:

测量不相容性是量子物理学与经典物理学不同的最突出的例子之一。如果两个测量不能通过经典的后处理从第三个测量中产生,则它们是不相容的。量化不兼容性的一种自然方法是噪声鲁棒性。在本文中,我们回顾了最近的结果,最大噪声鲁棒性的不兼容的测量,这已经得到了本作者使用自由谱面体,并重新推导它们使用张量范数。通过这种方式,我们使他们更广泛的受众从量子信息理论和数学物理,并有助于Banach空间理论和量子信息理论之间富有成效的相互作用。我们还使用张量范数和矩阵凸集对偶描述了不相容证人,强调了证人的不同概念之间的关系。

英文摘要:

Measurement incompatibility is one of the most striking examples of how quantum physics is different from classical physics. Two measurements are incompatible if they cannot arise via classical post-processing from a third one. A natural way to quantify incompatibility is in terms of noise robustness. In the present article, we review recent results on the maximal noise robustness of incompatible measurements, which have been obtained by the present authors using free spectrahedra, and rederive them using tensor norms. In this way, we make them accessible to a broader audience from quantum information theory and mathematical physics and contribute to the fruitful interactions between Banach space theory and quantum information theory. We also describe incompatibility witnesses using tensor norm and matrix convex set duality, emphasizing the relation between the different notions of witnesses.

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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