Theoretical investigation of optical integration between quantum dot emission and silicon nitride waveguides

Abstract

On-chip positional control of quantum dot single photon source (QDSPS) is an important problem for quantum photonic integrated circuits (PICs) due to the dependence of node and antinode locations inside an optical cavity and polarization states of QDSPS. To couple emitted photons at certain polarizations and wavelengths that are matched with allowed waveguide mode requires QDSPS deposition at specific locations with low fabrication tolerances. In this research, we simulated QDSPS for investigating the effects of position dependence on emitted single photons coupling efficiency and spontaneous emission rate by observing Purcell enhancement factor for both fundamental TE and TM modes.