Programmable integrated quantum photonics

Abstract

Integrated quantum photonics has become a burgeoning field of research that encompasses quantum light sources, nonlinear materials, photonic resonators, optical interconnects and detectors. There is also a growing need for programmable devices that enable rapid reconfiguration of individual components in integrated quantum photonic chips. In this Review we present our vision for programmable quantum photonics and explain why we regard it as the next frontier in the field of quantum nanophotonics. We discuss state-of-the-art reconfigurable and tunable elements (for example, phase shifters and quantum light sources) and highlight the emergence of materials that offer a new toolkit for tunabili..