Genuine multipartite entanglement is not a precondition for secure conference key agreement
Giacomo Carrara, Hermann Kampermann, Dagmar Bruß, Gláucia Murta · Physical Review Research · 2021
The authors show that in a Conference Key Agreement protocol the resource state used at each round of the protocol is not required to be Genuine Multipartite Entangled in order to establish a secret conference key.