On the minimum number of unitaries needed to describe a random-unitary channel
Quantum Physics
2007-05-23 v4
Abstract
We provide, in an extremely simple way, an upper bound to the minimum number of unitary operators describing a general random-unitary channel.
Cite
@article{arxiv.quant-ph/0607034,
title = {On the minimum number of unitaries needed to describe a random-unitary channel},
author = {Francesco Buscemi},
journal= {arXiv preprint arXiv:quant-ph/0607034},
year = {2007}
}
Comments
Final version accepted for publication. One wrong equation has been corrected, two notes and one reference have been added