QUANTUM PERFECT CORRELATIONS AND HARDY'S NONLOCALITY THEOREM

摘要: In this paper the failure of Hardy’s nonlocality proof for class maximally entangled states is considered. A detailed analysis shows that incompatibility Hardy equations physically originates from fact existence quantum perfect correlations three pairs two-valued observables (D11, D21), D22), and (D12, D21) [in sense having with certainty equal (different) readings a joint measurement any one D21)], necessarily entails correlation pair D22) D22)]. Indeed, set these four found to satisfy CHSH inequality, then no violations local realism will arise state as far Dij, i,j = 1 or 2, are concerned. The connection between impossibility mechanical predictions give maximum possible theoretical violation inequality pointed out. Moreover, it generally proved fulfillment all conditions resulting inequality. largest latter determined.