Friday, June 7, 2013

1110.3795 (Jean-Daniel Bancal et al.)

Quantum nonlocality based on finite-speed causal influences leads to
superluminal signaling
   [PDF]

Jean-Daniel Bancal, Stefano Pironio, Antonio Acin, Yeong-Cherng Liang, Valerio Scarani, Nicolas Gisin
The experimental violation of Bell inequalities using spacelike separated measurements precludes the explanation of quantum correlations through causal influences propagating at subluminal speed. Yet, any such experimental violation could always be explained in principle through models based on hidden influences propagating at a finite speed v>c, provided v is large enough. Here, we show that for any finite speed v with c

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