Test of the Violation of Local Realism in Quantum Mechanics with No Use of Bell’s Inequalities

  • G. Di Giuseppe
  • F. De Martini
  • D. Boschi


A novel and versatile polarization-entanglement scheme is adopted to investigate the violation of the EPR local realism for a non-maximally entangled two-photon system according to the recent “nonlocality proof” by Lucien Hardy. In this context the adoption of a sophisticated detection method allows direct determination of any “element of physical reality” (viz., determined “with probability equal to unity” in the words of Einstein, Podolsky and Rosen) for the pair system within complete measurements that are largely insensitive to the detector quantum-efficiencies and noise.


Physical Reality Photon Pair Local Realism Logical Contradiction Pair System 
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Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • G. Di Giuseppe
    • 1
  • F. De Martini
    • 1
  • D. Boschi
    • 1
  1. 1.Dipartimento di FisicaUniversita La SapienzaRomaItaly

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