Bell violation using entangled photons without the fair-sampling assumption

@article{Giustina2013BellVU,
  title={Bell violation using entangled photons without the fair-sampling assumption},
  author={Marissa Giustina and Alexandra Mech and Sven Ramelow and Bernhard Wittmann and Johannes Kofler and J{\"o}rn Beyer and Adriana E Lita and Brice Calkins and Thomas Gerrits and Sae Woo Nam and Rupert Ursin and Anton Zeilinger},
  journal={Nature},
  year={2013},
  volume={497},
  pages={227-230}
}
The violation of a Bell inequality is an experimental observation that forces the abandonment of a local realistic viewpoint—namely, one in which physical properties are (probabilistically) defined before and independently of measurement, and in which no physical influence can propagate faster than the speed of light. All such experimental violations require additional assumptions depending on their specific construction, making them vulnerable to so-called loopholes. Here we use entangled… 
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