Multipartite pure-state entanglement and the generalized Greenberger-Horne-Zeilinger states
Multipartite pure-state entanglement and the generalized Greenberger-Horne-Zeilinger states
We show that not all four-party pure states are Greenberger-Horne-Zeilinger (GHZ) reducible (i.e., can be generated reversibly from a combination of two-, three-, and four-party maximally entangled states by local quantum operations and classical communication asymptotically). We also present some properties of the relative entropy of entanglement for those three-party …