From Photonic Integrated Chip to Quantum Network: Performance Validation of Integrated Entangled Photon Sources

This project addresses the characterization and validation of an integrated quantum photonic source emitting multiple channels of entangled photon pairs in the telecommunications C-band. The source is based on a silicon nitride microcavity generating a quantum frequency comb via spontaneous four-wave mixing [1-2]. A key research challenge is to ensure high spectral purity, long photon temporal duration, temperature tunability, and inter-device indistinguishability—parameters that directly impact the visibility of Hong-Ou-Mandel (HOM) interference between independent sources [3]. Achieving robust HOM interference is essential for scalable quantum networking and multi-user quantum applications.
Ki3 Photonics develops compact, rack-mounted quantum light sources compatible with standard fiber infrastructure. Its main activities include the design, fabrication, integration, and commercialization of quantum frequency comb hardware for quantum communication and networking applications [4]. The company aims to solve critical challenges related to source reliability, reproducibility across chips, and compatibility with telecom components. In this project, the Mitacs intern will support the experimental characterization of integrated photonic chips and assembled systems, including measurements of spectral purity (Schmidt number), photon temporal duration, temperature-dependent frequency tuning, spectro-temporal overlap between independent sources, and HOM dip visibility.
The anticipated economic and social benefits include strengthening Canada’s position in quantum technologies, accelerating the commercialization readiness of domestic quantum hardware, and supporting deployment of secure quantum communication infrastructure. Improved source performance and manufacturability will enhance product reliability, reduce integration risk for partners such as national laboratories, and position Ki3 Photonics to access global quantum networking markets. In the long term, the project contributes to secure communications, advanced sensing, and distributed quantum computing applications with strategic importance for Canada’s digital sovereignty and cybersecurity ecosystem.

Faculty Supervisor:

Thomas Jennewein;Daniel Higginbottom

Student:

Partner:

Ki3 Photonics

Discipline:

Physics

Sector:

Information and cultural industries; Professional, scientific and technical services

University:

Simon Fraser University

Program: