Abstract
We study the nonlocal properties of states resulting from the mixture of an arbitrary entangled state of two -dimensional systems and completely depolarized noise, with respective weights and . We first construct a local model for the case in which is maximally entangled and at or below a certain bound. We then extend the model to arbitrary . Our results provide bounds on the resistance to noise of the nonlocal correlations of entangled states. For projective measurements, the critical value of the noise parameter for which the state becomes local is at least asymptotically larger than the critical value for separability.
- Received 8 March 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.040403
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal "citation, and DOI.