Cavity-Enhanced 2D Material Quantum Emitters Deterministically Integrated with Silicon Nitride Microresonators

Two-dimensional material (2DM)-based quantum emitters have shown to be an attractive class of single-photon emitters owing to their spectral brightness, room temperature operation, site-specific engineering capabilities, and their tunability with external electric and strain fields. Here, we demonstrate a novel approach to precisely align and embed hexagonal Boron Nitride (hBN) with background-free silicon nitride microring resonators. Through the Purcell effect, our emitters exhibit a cavity-enhanced spectral coupling efficiency of 46% at room temperature that surpasses the theoretical limit for cavity-free waveguide-emitter coupling and prior demonstrations by nearly an order of magnitude. In addition, we simulate the projected performance of a 2DM-quantum emitter-cavity system using solutions to the Jaynes-Cummings Hamiltonian for a two-level system in a cavity. Our simulations highlight that with further optimization of the intrinsic quality factors of the platform the low emission silicon nitride-2DM platform can become a viable contender for future on-demand on-chip scalable quantum photonic light sources.