Detecting genuine multipartite continuous-variable entanglement
Quantum Physics
2009-11-07 v1
Abstract
We derive necessary conditions in terms of the variances of position and momentum linear combinations for all kinds of separability of a multi-party multi-mode continuous-variable state. Their violations can be sufficient for genuine multipartite entanglement, provided the combinations contain both conjugate variables of all modes. Hence a complete state determination, for example by detecting the entire correlation matrix of a Gaussian state, is not needed.
Cite
@article{arxiv.quant-ph/0212052,
title = {Detecting genuine multipartite continuous-variable entanglement},
author = {Peter van Loock and Akira Furusawa},
journal= {arXiv preprint arXiv:quant-ph/0212052},
year = {2009}
}
Comments
13 pages, 3 figures