Simulating GHZ Correlations Relaxing Physical Constraints

Abstract

Violation of Bell inequality (or, Bell-type inequalities) by nonlocal correlations is justified by relaxation of at least one of the plausible physical constraints used to model such inequality. Based on this fact, in this letter we present a procedure to simulate three-qubit GHZ correlation relaxing two constraints, determinism and no signaling simultaneously. We have also derived the minimum amount of indeterminism and signaling to be introduced in a system. The corresponding number of signaling and local bits of mutual information needed to communicate are also provided and thus we are able to focus on utility of relaxation of these two constraints as useful resources.

5 pages, 1 figure, revtex, submitted to PRA

References in corpus (7)

• 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
• Local deterministic model of singlet state correlations based on relaxing measurement independence
• Relaxed Bell inequalities and Kochen-Specker theorems
• Quantifying the nonlocality of GHZ quantum correlations by a bounded communication simulation protocol
• Complementary contributions of indeterminism and signalling to quantum correlations

Cited by in corpus (3)

• A unifying framework for relaxations of the causal assumptions in Bell's theorem
• Bell scenarios with communication
• Revealing Quantum Advantage in a Quantum Network