English

The cost of exactly simulating quantum entanglement with classical communication

Quantum Physics 2009-10-31 v1

Abstract

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.

Keywords

Cite

@article{arxiv.quant-ph/9901035,
  title  = {The cost of exactly simulating quantum entanglement with classical communication},
  author = {Gilles Brassard and Richard Cleve and Alain Tapp},
  journal= {arXiv preprint arXiv:quant-ph/9901035},
  year   = {2009}
}

Comments

9 pages, LaTeX, no figures

R2 v1 2026-07-22T20:05:21.839Z