Local Detection of Entanglement
Quantum Physics
2009-11-07 v3
Abstract
We construct an explicit model where it can be established if a two mode pure Gaussian system is entangled or not by acting only on one of the parts that constitute the system. Measuring the dispersion in momentum and the time evolution of the dispersion in position of one particle we can tell if entanglement is present as well as the degree of entanglement of the system.
Cite
@article{arxiv.quant-ph/0206044,
title = {Local Detection of Entanglement},
author = {G. Rigolin and C. O. Escobar},
journal= {arXiv preprint arXiv:quant-ph/0206044},
year = {2009}
}
Comments
6 pages, 4 figures, title changed, published version: to appear in European Physical Journal D