Experimental Fully Contextual Correlations

被引：53

作者：

Amselem, Elias ^{[1
]}

Danielsen, Lars Eirik ^{[2
]}

Lopez-Tarrida, Antonio J. ^{[3
]}

Portillo, Jose R. ^{[4
]}

Bourennane, Mohamed ^{[1
]}

Cabello, Adan ^{[1
,3
]}

机构：

[1] Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden

[2] Univ Bergen, Dept Informat, N-5020 Bergen, Norway

[3] Univ Seville, Dept Fis Aplicada 2, E-41012 Seville, Spain

[4] Univ Seville, Dept Matemat Aplicada 1, E-41012 Seville, Spain

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 20期

基金：

瑞典研究理事会;

关键词：

HIDDEN-VARIABLES;

D O I：

10.1103/PhysRevLett.108.200405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum correlations are contextual yet, in general, nothing prevents the existence of even more contextual correlations. We identify and test a noncontextuality inequality in which the quantum violation cannot be improved by any hypothetical postquantum theory, and use it to experimentally obtain correlations in which the fraction of noncontextual correlations is less than 0.06. Our correlations are experimentally generated from the results of sequential compatible tests on a four-state quantum system encoded in the polarization and path of a single photon.

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