Abstract
We investigate the amount of communication that must augment classical local hidden variable models in order to simulate the behavior 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 Bell states, a constant times bits of communication is necessary.
- Received 15 January 1999
DOI:https://doi.org/10.1103/PhysRevLett.83.1874
©1999 American Physical Society