Hybrid Quantum Nanophotonics: Interfacing Color Center in Nanodiamonds with Si3N4-Photonics

TL;DR

This paper reviews recent advances in hybrid quantum photonics combining nanodiamond color centers with Si3N4 photonics, highlighting fabrication, integration, and potential applications in quantum communication.

Contribution

It presents a comprehensive overview of the development of a hybrid platform integrating nanodiamonds with Si3N4 photonics for quantum information applications.

Findings

Progress in Si3N4-photonics fabrication and optimization

Advances in creating and controlling nanodiamond color centers

Successful integration of nanodiamonds into photonic structures

Abstract

This chapter covers recent developments in the field of hybrid quantum photonics based on color centers in nanodiamonds and Si3N4-photonics towards a technology platform with applications in quantum information processing and quantum information distribution. The methodological approach can be divided in three main tasks. First, the fabrication and optimization of Si3N4-photonics. Second, the creation, characterization and control of color centers in nanodiamonds. Third, the assembly of hybrid quantum photonics by integrating the nanodiamonds into the photonic structures. One focus will be the efficient interfacing of the color centers done by optimizing the optical coupling. The chapter describes recent progress in all three steps and summarizes the established hybrid platform. We believe, that the hybrid approach provides a promising path to realize quantum photonic applications, such as quantum networks or quantum repeaters, in the near future.