Integrated on chip platform with quantum emitters in layered materials

TL;DR

This paper demonstrates the integration of quantum emitters in layered hexagonal boron nitride with on-chip aluminium nitride waveguides at room temperature, achieving efficient single-photon transmission for quantum photonic circuits.

Contribution

It introduces a novel on-chip platform combining layered materials with integrated quantum emitters and waveguides, advancing scalable quantum photonic device development.

Findings

Achieved 1.2% light coupling efficiency

Demonstrated transmission of single photons through the waveguide

Established a foundation for layered material integration in quantum photonics

Abstract

Integrated quantum photonic circuitry is an emerging topic that requires efficient coupling of quantum light sources to waveguides and optical resonators. So far, great effort has been devoted to engineering on-chip systems from three-dimensional crystals such as diamond or gallium arsenide. In this study, we demonstrate room temperature coupling of quantum emitters embedded within a layered hexagonal boron nitride to an on-chip aluminium nitride waveguide. We achieved 1.2% light coupling efficiency of the device and realise transmission of single photons through the waveguide. Our results serve as a foundation for the integration of layered materials with on-chip components and for the realisation of integrated quantum photonic circuitry.