Inverse Design of a Hybrid Mie-Tamm Photonic Structure as a Highly Directional Gigahertz Single-Photon Source

We present a photonic structure in which Mie, Tamm, and surface-plasmon optical modes can be tailored to enhance the brightness of an embedded single-photon emitter. Contrary to most proposals, the structure is designed for excitation and collection through the substrate side. The front surface can be used instead to arrange metal contacts which serve the purpose of both electrical gates and optical mirrors. The design is particularized for InGaAs quantum dots on GaAs, resulting in an out-coupled single-photon rate exceeding 3 GHz in a cone of narrow numerical aperture (NA = 0.17). The fabrication tolerances are also discussed.