Improved lower bounds on genuine-multipartite-entanglement concurrence
Quantum Physics
2012-09-26 v3
Abstract
Genuine-multipartite-entanglement (GME) concurrence is a measure of genuine multipartite entanglement that generalizes the well-known notion of concurrence. We define an observable for GME concurrence. The observable permits us to avoid full state tomography and leads to different analytic lower bounds. By means of explicit examples we show that entanglement criteria based on the bounds have a better performance with respect to the known methods.
Cite
@article{arxiv.1205.3057,
title = {Improved lower bounds on genuine-multipartite-entanglement concurrence},
author = {Zhi-Hua Chen and Zhi-Hao Ma and Jing-Ling Chen and Simone Severini},
journal= {arXiv preprint arXiv:1205.3057},
year = {2012}
}
Comments
17 pages, 1 EPS figure; v3 is in one column to improve readability of equations