Violation of local realism with freedom of choice.

  title={Violation of local realism with freedom of choice.},
  author={Thomas Scheidl and Rupert Ursin and Johannes Kofler and S. Ramelow and Xiao-song Ma and Thomas Herbst and Lothar Ratschbacher and Alessandro Fedrizzi and N K Langford and Thomas Jennewein and Anton Zeilinger},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={107 46},
Bell's theorem shows that local realistic theories place strong restrictions on observable correlations between different systems, giving rise to Bell's inequality which can be violated in experiments using entangled quantum states. Bell's theorem is based on the assumptions of realism, locality, and the freedom to choose between measurement settings. In experimental tests, "loopholes" arise which allow observed violations to still be explained by local realistic theories. Violating Bell's… CONTINUE READING
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