Local Hidden Variable Theories for Quantum States
Quantum Physics
2009-11-07 v2
Abstract
While all bipartite pure entangled states violate some Bell inequality, the relationship between entanglement and non-locality for mixed quantum states is not well understood. We introduce a simple and efficient algorithmic approach for the problem of constructing local hidden variable theories for quantum states. The method is based on constructing a so-called symmetric quasi-extension of the quantum state that gives rise to a local hidden variable model with a certain number of settings for the observers Alice and Bob.
Cite
@article{arxiv.quant-ph/0210053,
title = {Local Hidden Variable Theories for Quantum States},
author = {Barbara M. Terhal and Andrew C. Doherty and David Schwab},
journal= {arXiv preprint arXiv:quant-ph/0210053},
year = {2009}
}
Comments
8 pages Revtex; v2 contains substantial changes, a strengthened main theorem and more references