Universal Photonic Quantum Interface for a Quantum Network

Abstract

A quantum network consisting of more than one physical system can combine the advantages and avoid the inherent drawbacks of those different systems. However, a compatible quantum interface is needed to connect them and form a larger quantum network. The authors use nondegenerate narrow-band polarization-entangled photon pairs to entangle different nodes, creating a universal photonic quantum interface that will significantly aid in the development of more complex networks, for quantum communication or distributed quantum computing.