Departamento de Física Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain.
Phys Rev Lett. 2010 Jun 4;104(22):220401. doi: 10.1103/PhysRevLett.104.220401. Epub 2010 Jun 1.
Two distant systems can exhibit quantum nonlocality even though the correlations between them admit a local model. This nonlocality can be revealed by testing extra correlations between successive measurements on one of the systems which do not admit a noncontextual model whatever the reduced state of this system is. This shows that quantum contextuality plays a fundamental role in quantum nonlocality, and allows an experimental test of the Kochen-Specker with locality theorem.
即使两个遥远的系统之间的关联可以用局部模型来描述，它们也可能表现出量子非局域性。这种非局域性可以通过测试其中一个系统的连续测量之间的额外关联来揭示，无论这个系统的约化态如何，这些额外关联都不允许使用非语境模型。这表明量子语境性在量子非局域性中起着基本的作用，并允许对局部性的科亨-斯佩克定理进行实验检验。
