Stable frequency comb generation using integrated micro-ring resonators (MRRs) for entanglement distribution networks

The quantum internet is predicted to have a substantial impact on our modern society, enabling the transfer of information through networks (so-called quantum networks) with unprecedented security compared to our current, classical protocols. Although small-scale, proof-of-principle quantum network experiments using photons (quanta of light) have already shown great promise, the scaling of these experiments into real-world networks faces numerous challenges. This project will focus on one of these important challenges, that of ensuring the photon frequencies used in the various elements of the network do not change over time. Changes in the frequencies can lead to degradation of the signal being transmitted, so limiting the usability of the network. The project will use an existing integrated technology to generate many different frequencies (a frequency comb), all of which will be stabilised to a common, stable reference frequency. These multiple frequencies can subsequently be used to synchronise and stabilise the different quantum technology platforms that will be used in future quantum networks, both at the University of Geneva, at the University of Calgary, as well as at other institutions around the globe.

Faculty Supervisor:

Daniel Oblak

Student:

Partner:

University of Geneva

Discipline:

Physics

Sector:

Education

University:

University of Calgary

Program: