Finding an approach to actuate nonlinear optical effects at ultra-low powers and on chip-scale devices is one of the outstanding challenges in optics. The ultimate limit is the quantum regime where individual light quanta strongly interact with each other, which would have far-reaching consequences in information technologies if achieved.
In particular, it would enable the best possible performance and wide deployment of classical nonlinear devices, and facilitate disruptive quantum information protocols that fundamentally cannot be realized on classical platforms. The primary obstacle is the weak nonlinear response of available optical materials, which necessitates high intensities and long interaction times to induce nonlinear effects.
In this project we will theoretically and experimentally pursue a fundamentally new paradigm - graphene-based single-photon nonlinear optics - that eliminates all of the current barriers. We aim for the first demonstration of the deterministic generation of non-classical light using graphene as an extraordinary "bulk" nonlinear material, rather than through the conventional use of individual quantum emitters.