All entangled states violate a Leggett inequality [PDF]
Miguel NavascuesIn this note, we prove that any set of bipartite correlations compatible with Leggett's model must necessarily correspond to the statistics generated by a separable two-qubit state. Consequently, any experiment reporting entanglement between the polarization degrees of freedom of two photons can be interpreted as a violation of Leggett's crypto-nonlocality.View original: http://arxiv.org/abs/1303.5124
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