Zero-error classical capacity of qubit channels cannot be superactivated
Quantum Physics
2012-05-29 v1
Abstract
It was shown [T.S. Cubitt et al., IEEE Trans. Inform. Theory 57, 8114 (2011)] that there exist quantum channels where a single use cannot transmit classical information perfectly yet two uses can. This phenomenon is called the superactivation of the zero-error classical capacity which does not occur in classical channels. In this paper, it is shown that qubit channels cannot generate the superactivation.
Keywords
Cite
@article{arxiv.1205.5851,
title = {Zero-error classical capacity of qubit channels cannot be superactivated},
author = {Jeonghoon Park and Soojoon Lee},
journal= {arXiv preprint arXiv:1205.5851},
year = {2012}
}
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4 pages