Quantum Discord and Maxwell's Demons
Quantum Physics
2009-11-10 v1
Abstract
Quantum discord was proposed as an information theoretic measure of the ``quantumness'' of correlations. I show that discord determines the difference between the efficiency of quantum and classical Maxwell's demons -- that is, entities that can or cannot measure nonlocal observables or carry out conditional quantum operations -- in extracting work from collections of correlated quantum systems.
Keywords
Cite
@article{arxiv.quant-ph/0301127,
title = {Quantum Discord and Maxwell's Demons},
author = {Wojciech Hubert Zurek},
journal= {arXiv preprint arXiv:quant-ph/0301127},
year = {2009}
}
Comments
This is the final version of quant-ph/0202123, to appear in Physical Review A