This work presents the numerical design and optimization of a monolithic, on-chip single-photon source. The source consists of a whispering-gallery-mode micropillar laser evanescently coupled to a ridge waveguide containing a single quantum dot. The FEM solver JCMsuite was used to perform eigenmode and scattering simulations to optimize the device geometry, analyzing the impact of parameters like the pillar-waveguide gap distance and waveguide width on the coupling efficiency and resonator quality factor.
L. J. Roche, et al. Numerical Investigation of a Coupled Micropillar – Waveguide System for Integrated Quantum Photonic Circuits. Adv. Quantum Technol., 7, 2400195 (2024).