Information as a resource in distributed quantum systems
Quantum Physics
2009-11-07 v2
Abstract
A new paradigm for distributed quantum systems where information is a valuable resource is developed. After finding a unique measure for information, we construct a scheme for it's manipulation in analogy with entanglement theory. In this scheme instead of maximally entangled states, two parties distill local states. We show that, surprisingly, the main tools of entanglement theory are general enough to work in this opposite scheme. Up to plausible assumptions, we show that the amount of information that must be lost during the protocol of concentration of local information can be expressed as the relative entropy distance from some special set of states.
Cite
@article{arxiv.quant-ph/0207168,
title = {Information as a resource in distributed quantum systems},
author = {Michal Horodecki and Karol Horodecki and Pawel Horodecki and Ryszard Horodecki and Jonathan Oppenheim and Aditi Sen De and Ujjwal Sen},
journal= {arXiv preprint arXiv:quant-ph/0207168},
year = {2009}
}
Comments
4 pages, revtex4, presentation improved, to appear in Phys. Rev. Lett