Almost quantum correlations
Author
Navascués, M.
Guryanova, Y.
Hoban, M.J.
Acín, A.
Date
2015Source Title
Nature Communications
Print ISSN
20411723
Publisher
Nature Publishing Group
Volume
6
Language
English
Type
ArticleItem Usage Stats
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Abstract
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. © 2015 Macmillan Publishers Limited.
Keywords
correlationquantum mechanics
theoretical study
Article
conceptual framework
correlational study
mathematical analysis
mathematical computing
measurement precision
probability
quantum theory
structure analysis