Zhi-Hua Chen, Jing-Ling Chen, Zhi-Hao Ma, Simone Severini
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 to avoid full state tomography and leads to new 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.
View original:
http://arxiv.org/abs/1205.3057
No comments:
Post a Comment