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Second‐Second Moments and Two Observers Testing Quantum Nonlocality
Annalen Der Physik ( IF 2.2 ) Pub Date : 2020-12-08 , DOI: 10.1002/andp.202000456
Adam Bednorz 1
Affiliation  

It is shown that rejection of local realism in quantum mechanics can be tested by Bell‐type inequalities for two observers and low‐order moments of continuous and unbounded observables. It is proved that one requires three observables for each observer for a maximally entangled state and two observables for a non‐maximally entangled state and write down appropriate inequalities and show violation by quantum examples. Finding an example for quadratures or position and momentum is left as an open problem.

中文翻译:

第二秒矩和两个观察者测试量子非局域性

结果表明,可以通过两个观察者的贝尔型不等式以及连续和无界可观测量的低阶矩来检验量子力学中对局部现实主义的排斥。事实证明,对于一个最大纠缠态,每个观察者都需要三个可观值,对于一个最大非纠缠态,则需要两个可观值,并写下适当的不等式,并通过量子例子表明其违背。寻找正交或位置和动量的例子仍然是一个悬而未决的问题。
更新日期:2021-02-10
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