Compressing compound states
Quantum Physics
2007-05-23 v1
Abstract
Quantum compression can be thought of not only as compression of a signal, but also as a form of cooling. In this view, one is interested not in the signal, but in obtaining purity. In compound systems, one may be interested to cool the system to obtain {\it local purity} by use of local operations and classical communication [Oppenheim et al. Phys. Rev. Lett. 89,180402 (2002)]. Here we compare it with usual compression and find that it can be represented as compression with suitably restricted means.
Cite
@article{arxiv.quant-ph/0302139,
title = {Compressing compound states},
author = {Michal Horodecki and Pawel Horodecki and Jonathan Oppenheim},
journal= {arXiv preprint arXiv:quant-ph/0302139},
year = {2007}
}
Comments
5 pages, submitted to special issue of Int. J. Theor. Phys. on "Quantum Composite Systems: theory, experiment and applications"