Description du sujet de thèse

This PhD thesis explores the enhancement of plasmonic sources based on inelastic electron tunneling (IET) in metal–insulator–metal (MIM) junctions by utilizing low-loss dielectric resonators. The objective is to increase the electron-plasmon-photon conversion efficiency to technologically relevant levels by engineering the electromagnetic environment of the junctions. Dielectric resonators, such as resonant microrings, offer significant advantages, including the absence of Joule heating, mature fabrication processes, and high quality factors. The research will focus on engineering the local density of optical states, studying the feedback effects of optical modes on the transport properties of the junctions, and exploring new methods of photo-assisted tunneling. Finite element simulations and inelastic tunneling spectroscopy experiments will be employed to analyze these interactions. Finally, innovative correlation measurements between multiple tunnel junctions coupled to the same resonant optical environment will be investigated to reveal potential conditions for collective pumping.

Contexte de travail

The PhD candidate will join the Photonics Department of the Interdisciplinary Carnot de Bourgogne Laboratory (ICB), a joint research unit between CNRS and the University of Bourgogne Franche-Comté, renowned for its excellence in optics, photonics, and nanotechnology. As part of a dynamic and interdisciplinary team, the candidate will benefit from a stimulating research environment equipped with state-of-the-art technological platforms (nanofabrication, ultrafast optics, advanced imaging). The PhD project is part of an active collaboration with both academic and industrial partners, offering valuable opportunities for knowledge exchange and research valorization. The candidate will work in an innovation-driven setting, at the heart of a strong regional scientific hub, on the Dijon campus.

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.