For quantum information, two wrongs can make a right
Quantum Physics
2010-04-02 v1
Abstract
Superactivation is the phenomenon where two quantum channels which individually have zero-capacity can have positive capacity when used together. The perspective given here provides an intuitive explanation of this discovery by Smith and Yard, and gives a protocol to activate any private channel.
Cite
@article{arxiv.1004.0052,
title = {For quantum information, two wrongs can make a right},
author = {Jonathan Oppenheim},
journal= {arXiv preprint arXiv:1004.0052},
year = {2010}
}