Inverse design of photonic crystal waveguides to control quantum dot emissions and losses

Semiconductor quantum dots (QDs) placed on photonic crystal waveguides (PCWs) can be used to create nearly deterministic, on-demand single-photon sources to be used in quantum computation. We improve the quality of quantum computations by utilizing 3D inverse design of PCWs that are resilient to fabrication noise and can be designed with arbitrary constraints on the PCW band and mode structure, finding an order of magnitude reduction in disorder-induced backscatter losses compared to current state of the art designs.