Lower and upper bounds on nonunital qubit channel capacities
Quantum Physics
2019-03-22 v2
Abstract
Classical capacity of unital qubit channels is well known, whereas that of nonunital qubit channels is not. We find lower and upper bounds on classical capacity of nonunital qubit channels by using a recently developed decomposition technique relating nonunital and unital positive qubit maps.
Keywords
Cite
@article{arxiv.1802.00646,
title = {Lower and upper bounds on nonunital qubit channel capacities},
author = {Sergey N. Filippov},
journal= {arXiv preprint arXiv:1802.00646},
year = {2019}
}
Comments
5 pages, 2 figures