Experimental test of nonlocal causality

@article{Ringbauer2016ExperimentalTO,
  title={Experimental test of nonlocal causality},
  author={Martin Ringbauer and Christina Giarmatzi and Rafael Chaves and Fabio Costa and Andrew G. White and Alessandro Fedrizzi},
  journal={Science Advances},
  year={2016},
  volume={2}
}
Causation at a distance does not explain quantum correlations. Explaining observations in terms of causes and effects is central to empirical science. However, correlations between entangled quantum particles seem to defy such an explanation. This implies that some of the fundamental assumptions of causal explanations have to give way. We consider a relaxation of one of these assumptions, Bell’s local causality, by allowing outcome dependence: a direct causal influence between the outcomes of… 

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