Simple Explanation of the Quantum Violation of a Fundamental Inequality
Simple Explanation of the Quantum Violation of a Fundamental Inequality
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DOI：
10.1103/physrevlett.110.060402
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发表时间：
2013-02-05
影响因子：
8.6
通讯作者：
Cabello, Adan
中科院分区：
文献类型：
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作者：
Cabello, Adan
我们证明了Klyachko-Can-Binicioglu-Shumovsky （KCBS）不等式的最大量子违逆恰好是满足以下原则的最大值：两两不相容事件的概率之和不能超过1。我们称这一原则为“全球排他性”，因为当它被应用于由扩大的场景所导致的全球事件时，它的力量就会显现出来，在这种场景中，不平等中的事件与其他事件一起被考虑。我们确定了该原理挑选出量子上下文的场景，并表明最近排除非局部框的证明遵循该原理对KCBS不等式施加的最大违反。DOI: 10.1103 / PhysRevLett.110.060402
We show that the maximum quantum violation of the Klyachko-Can-Binicioglu-Shumovsky (KCBS) inequality is exactly the maximum value satisfying the following principle: The sum of probabilities of pairwise exclusive events cannot exceed 1. We call this principle "global exclusivity," since its power shows up when it is applied to global events resulting from enlarged scenarios in which the events in the inequality are considered jointly with other events. We identify scenarios in which this principle singles out quantum contextuality, and show that a recent proof excluding nonlocal boxes follows from the maximum violation imposed by this principle to the KCBS inequality. DOI: 10.1103/PhysRevLett.110.060402