Local deterministic simulation of equatorial Von Neumann measurements on tripartite GHZ state

Abstract

Experimental free-will or measurement independence is one of the crucial assumptions in derivation of any nonlocal theorem. Any nonlocal correlation obtained in quantum world can have a local deterministic explanation if there is no experimental free-will in choosing the measurement settings. Recently, in [Phys. Rev. Lett. {\bf105}, 250404 (2010)] it has been shown that to obtain a local deterministic description for singlet state correlation one does not need to give up measurement independence completely, but a partial measurement dependence suffices. In three party scenario considering GHZ correlation one can exhibit absolute contradiction between quantum theory and local realism. In this paper we show that such correlation also has local deterministic description if measurement independence is given up, even if not completely. We provide a local deterministic model for equatorial Von Neumann measurements on tripartite GHZ state by sacrificing measurement independence partially.

Accepted in Quantum Inf Process (close to accepted version)

References in corpus (9)

• Bell nonlocality
• Device-independent security of quantum cryptography against collective attacks
• Device-independent quantum key distribution secure against collective attacks
• The Communication Cost of Simulating Bell Correlations
• Private Randomness Expansion With Untrusted Devices
• Local deterministic model of singlet state correlations based on relaxing measurement independence
• Three-party quantum secure direct communication based on Greenberger-Horne-Zeilinger states
• Relaxed Bell inequalities and Kochen-Specker theorems
• Quantifying the nonlocality of GHZ quantum correlations by a bounded communication simulation protocol