Communication in engineered quantum networks

Abstract

We review the engineering of passive quantum networks for performing fundamental quantum communications tasks, such as the transfer, routing, and splitting of signals that are associated with quantum states. After an introduction to fundamental concepts and notions, the problem of quantum state transfer is discussed for networks of various physical and logical topologies. The discussion is cast in terms of a unified theoretical formalism, which is perfectly suited to addressing the problem in the context of various physical realizations.