The cost of exactly simulating quantum entanglement with classical communication

Details The cost of exactly simulating quantum entanglement with classical communication The cost of exactly simulating quantum entanglement with classical communication

1999-01-15

arxiv.org/abs/quant-ph/9901035v1

Phys.Rev.Lett. 83 (1999) 1874-1877

Physics

Quantum Physics

9 pages, LaTeX, no figures

Scientific paper

10.1103/PhysRevLett.83.1874

We investigate the amount of communication that must augment classical local hidden variable models in order to simulate the behaviour of entangled quantum systems. We consider the scenario where a bipartite measurement is given from a set of possibilities and the goal is to obtain exactly the same correlations that arise when the actual quantum system is measured. We show that, in the case of a single pair of qubits in a Bell state, a constant number of bits of communication is always sufficient--regardless of the number of measurements under consideration. We also show that, in the case of a system of n Bell states, a constant times 2^n bits of communication are necessary.

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