Quantum photonic networks: building large-scale quantum machines out of light

"Non-classical states of light enable new modes of new modes of communications, sensing and computation. A key objective of current research is the construction of a scalable photonic quantum network that will facilitate the preparation of distributed quantum correlations among light beams, and enable new quantum-enhanced applications. Such a network can be constructed by means of pure-state quantum light sources, linear optical operations, measurement by photodetectors, and storage in a photonic quantum memory. I will discuss recent progress in developing a scalable network using such components, and describe some recent applications in quantum simulation, communication and metrology."