AlGaN photonic circuits with integrated diamond nanophotonic quantum devices for one-way quantum repeaters

Optically active spin defects in diamond have proven to be a promising resource for the implementation of quantum information processing. Their long-term implementation requires the application of microwave and optical coherent control schemes to single, low noise defects coupled to diamond nanophotonic devices with near-unity interfacing efficiencies to the underlying photonic integrated circuits. Such systems will enable the generation of multi-qubit entangled states — the core resource for the implementation of long-distance quantum communication and quantum networking. In this presentation I will introduce our most recent efforts in applying photonic integrated quantum systems towards scalable quantum information processing.