An experimental test of non-local realism

@article{Grblacher2007AnET,
  title={An experimental test of non-local realism},
  author={Simon Gr{\"o}blacher and Tomasz Paterek and Rainer Kaltenbaek and {\vC}aslav Brukner and Marek Żukowski and Markus Aspelmeyer and Anton Zeilinger},
  journal={Nature},
  year={2007},
  volume={446},
  pages={871-875}
}
Most working scientists hold fast to the concept of ‘realism’—a viewpoint according to which an external reality exists independent of observation. But quantum physics has shattered some of our cornerstone beliefs. According to Bell’s theorem, any theory that is based on the joint assumption of realism and locality (meaning that local events cannot be affected by actions in space-like separated regions) is at variance with certain quantum predictions. Experiments with entangled pairs of… 

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