Quantifying the nonlocality of greenberger-horne-zeilinger quantum correlations by a bounded communication simulation protocol

Abstract

The simulation of quantum correlations with finite nonlocal resources, such as classical communication, gives a natural way to quantify their nonlocality. While multipartite nonlocal correlations appear to be useful resources, very little is known on how to simulate multipartite quantum correlations. We present a protocol that reproduces tripartite Greenberger-Horne-Zeilinger correlations with bounded communication: 3bits in total turn out to be sufficient to simulate all equatorial VonNeumann measurements on the tripartite Greenberger-Horne- Zeilinger state. © 2011 American Physical Society.