Almost quantum correlations

作者：Navascues Miguel; Guryanova Yelena; Hoban Matty J; Acin Antonio^*

来源：Nature Communications, 2015, 6(1): 6288.

DOI：10.1038/ncomms7288

Quantum theory is not only successfully tested in laboratories every day but also constitutes a robust theoretical framework: small variations usually lead to implausible consequences, such as faster-than-light communication. It has even been argued that quantum theory may be special among possible theories. Here we report that, at the level of correlations among different systems, quantum theory is not so special. We define a set of correlations, dubbed 'almost quantum', and prove that it strictly contains the set of quantum correlations but satisfies all-but-one of the proposed principles to capture quantum correlations. We present numerical evidence that the remaining principle is satisfied too.

• 出版日期2015-2