Detecting Entanglement with Jarzynski's Equality
Quantum Physics
2010-06-09 v2 Statistical Mechanics
Abstract
We present a method for detecting the entanglement of a state using non-equilibrium processes. A comparison of relative entropies allows us to construct an entanglement witness. The relative entropy can further be related to the quantum Jarzynski equality, allowing non-equilibrium work to be used in entanglement detection. To exemplify our results, we consider two different spin chains.
Cite
@article{arxiv.0907.0179,
title = {Detecting Entanglement with Jarzynski's Equality},
author = {Jenny Hide and Vlatko Vedral},
journal= {arXiv preprint arXiv:0907.0179},
year = {2010}
}
Comments
4 pages, 3 figures