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Simulating Maximal Quantum Entanglement without Communication

Cerf, N. J.
Massar, S.
Popescu, S.
Published in Physical Review Letters. 2005, vol. 94, no. 22
Abstract It is known that all causal correlations between two parties which output each 1 bit, a and b, when receiving each 1 bit, x and y, can be expressed as convex combinations of local correlations (i.e., correlations that can be simulated with local random variables) and nonlocal correlations of the form a+b=xy mod 2. We show that a single instance of the latter elementary nonlocal correlation suffices to simulate exactly all possible projective measurements that can be performed on a maximally entangled state of two qubits, with no communication needed at all. This elementary nonlocal correlation thus defines some unit of nonlocality, which we call a nl bit.
PMID: 16090370
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CERF, N. J. et al. Simulating Maximal Quantum Entanglement without Communication. In: Physical Review Letters, 2005, vol. 94, n° 22. https://archive-ouverte.unige.ch/unige:36755

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Deposited on : 2014-05-20

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