Entanglement-assisted capacity of constrained quantum channel
Quantum Physics
2009-11-07 v2
Abstract
In this paper we fill the gap in previous works by proving the formula for entanglement-assisted capacity of quantum channel with additive constraint (such as bosonic Gaussian channel). The main tools are the coding theorem for classical-quantum constrained channels and a finite dimensional approximation of the input density operators for entanglement-assisted capacity. The new version contains improved formulation of sufficient conditions under which suprema in the capacity formulas are attained.
Cite
@article{arxiv.quant-ph/0211170,
title = {Entanglement-assisted capacity of constrained quantum channel},
author = {A. S. Holevo},
journal= {arXiv preprint arXiv:quant-ph/0211170},
year = {2009}
}
Comments
Extended version of paper presented at Quantum Informatics Symposium, Zvenigorod, 1-4.10.2002