A bright single-photon source realized by on-chip integration of a deterministic quantum dot microlens with a 3D-printed multilens micro-objective is demonstrated. FEM simulations are used for optical design.
S. Fischbach, et al. Single Quantum Dot with Microlens and 3D-Printed Micro-objective as Integrated Bright Single-Photon Source. ACS Photonics 4, 1327 (2018).