Photonic quantum networks

Hybrid light-matter networks offer the promise for delivering robust quantum information processing technologies, from sensor arrays to quantum simulators. Recent develpoments in new quantum light sources, reconfigurable and modular circuit design and fabrciation, novel waveguide-based detectors and low-noise photonic memories have all contributed in progress towards a resilient, scalable photonic quantum network. Purely photonic quantum simulators have been demonstrated, and better understanding of the role of imperfections in degrading the performance of such devices has been made, alghouth concrete limits are known in only a few cases. Meanwhile progress in hybrid networks indicates that scalable performance should be possible, albeit only when a number of engineering challenges have been met.