Transition behavior in the capacity of correlated-noisy channels in arbitrary dimensions
Quantum Physics
2009-11-13 v2
Abstract
We construct a class of quantum channels in arbitrary dimensions for which entanglement improves the performance of the channel. The channels have correlated noise and when the level of correlation passes a critical value we see a sharp transition in the optimal input states (states which minimize the output entropy) from separable to maximally entangled states. We show that for a subclass of channels with some extra conditions, including the examples which we consider, the states which minimize the output entropy are the ones which maximize the mutual information.
Keywords
Cite
@article{arxiv.quant-ph/0603223,
title = {Transition behavior in the capacity of correlated-noisy channels in arbitrary dimensions},
author = {V. Karimipour and L. Memarzadeh},
journal= {arXiv preprint arXiv:quant-ph/0603223},
year = {2009}
}
Comments
11 pages, Latex, 4 figures, Accepted for publication in Physical Review A