Experimentally faking the violation of Bell's inequalities.

  title={Experimentally faking the violation of Bell's inequalities.},
  author={Ilja Gerhardt and Qin Liu and Antia Lamas-Linares and Johannes Skaar and Valerio Scarani and Vadim Makarov and Christian Kurtsiefer},
  journal={Physical review letters},
  volume={107 17},
Entanglement witnesses such as Bell inequalities are frequently used to prove the nonclassicality of a light source and its suitability for further tasks. By demonstrating Bell inequality violations using classical light in common experimental arrangements, we highlight why strict locality and efficiency conditions are not optional, particularly in security-related scenarios. 

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