Nonlocality without counterfactual reasoning
Nonlocality without counterfactual reasoning
复制标题
没有反事实推理的非定域性
DOI：
10.1103/physreva.92.052102
复制
发表时间：
2015
影响因子：
2.9
通讯作者：
S. Wolf
中科院分区：
文献类型：
--
作者：
S. Wolf
非局部相关性通常是通过（对系统的两个或更多部分）替代测量的结果来理解的，而这些结果实际上不能在实验中完全实现。事实上，当且仅当所有可能输入的输出不能一致共存时，联合输入/输出——例如，测量设置/结果——行为是非局部的。有人认为，这种反事实的观点是如何看待贝尔不等式及其违反。我们提出了另一种观点，避免将相互排斥的测量结果联系起来，而是完全基于实际可用的数据。我们的方法使用算法复杂性而不是概率，意味着非局部性具有与概率视图相似的结果，并且在概念上更简单，但同时比后者更通用。
Non-local correlations are usually understood through the outcomes of alternative measurements (on two or more parts of a system) that cannot altogether actually be carried out in an experiment. Indeed, a joint input/output -- e.g., measurement-setting/outcome -- behavior is non-local if and only if the outputs for all possible inputs cannot coexist consistently. It has been argued that this counterfactual view is how Bell's inequalities and their violations are to be seen. We propose an alternative perspective which refrains from setting into relation the results of mutually exclusive measurements, but that is based solely on data actually available. Our approach uses algorithmic complexity instead of probability, implies non-locality to have similar consequences as in the probabilistic view, and is conceptually simpler yet at the same time more general than the latter.