On the transitional behavior of quantum Gaussian memory channels
Quantum Physics
2010-05-18 v2
Abstract
We address the question of optimality of entangled input states in quantum Gaussian memory channels. For a class of such channels, that can be traced back to the memoryless setting, we state a criterion which relate the optimality of entangled inputs to the symmetry properties of the channels' action. Several examples of channel models belonging to this class are discussed.
Cite
@article{arxiv.1003.2393,
title = {On the transitional behavior of quantum Gaussian memory channels},
author = {C. Lupo and S. Mancini},
journal= {arXiv preprint arXiv:1003.2393},
year = {2010}
}
Comments
Typos corrected, close to the published version. 9 pages, comments are welcome