Cavity coupling of spin defects in two-dimensional materials

Future optical networks will rely on solid state materials that are a source of optically addressable single quantum objects. Single optically addressable electronic and nuclear spins, associated with solid state defects, or colour centres, are leading contenders. Efficient outcoupling of light from defects, as well as coupling of spins and photons, is critical for their application. This project will realise a cavity-coupled single photon emitting spin defect in a two-dimensional material. The project will use laser processing, focused ion beam milling, plasma etching and thermal treatments to produce arrays of cavity devices with coupled defects in hexagonal boron nitride. The optical and spin coherence of the cavity-coupled defects will be benchmarked, towards realization of a 2D platform for quantum optical technologies. The project will combine expertise in the department across cavity coupling of defects (Prof. Smith) and spin defects in hexagonal boron nitride (Prof. Stern) and will contribute to the UK-wide effort to develop new materials for quantum technologies. 

Image: Tobias Vogl