Missions

The main mission of the candidate will be to carry out terahertz (THz) emission measurements resulting from radiative recombination between Landau levels in materials exhibiting a strong band non-parabolicity, with or without an integrated optical cavity.
To achieve this objective, several steps will be required:

Preparation of samples in a cleanroom;
Characterization of THz optical cavities;
Experimental study of Landau levels by magneto-absorption spectroscopy.
The analysis of the results will rely on theoretical models developed under non-equilibrium thermodynamic conditions, taking into account — or not — the cavity effect.

Activités

The candidate will be actively involved in all stages of the project, including:
Preparation of samples in a cleanroom, in collaboration with the project partners;
Experimental measurements of cyclotron emission in the terahertz range, under magnetic field and low-temperature conditions;
Analysis and interpretation of experimental data, based on the theoretical models developed within the project;
Dissemination and valorization of results through scientific publications and presentations at national and international conferences.

Compétences

The candidate should possess:
A strong background in solid-state physics, particularly in electronic phenomena in semiconductors and topological materials;
Experimental skills in terahertz (THz) spectroscopy, along with solid experience in the use of high magnetic fields and cryogenic techniques;

Experience in the modeling and simulation of quantum systems, especially Dirac-type materials under magnetic field;
A good understanding of strong light–matter coupling phenomena and the physics of polaritons;
Autonomy, scientific rigor, and the ability to work collaboratively within an international team combining experimental and theoretical expertise.

Contexte de travail

The position is offered within the framework of the ANR PRC TEASER project, which aims to develop a new terahertz (THz) emitter based on stimulated emission from Landau-level polaritons. This innovative approach paves the way for a significant improvement in performance within the 1–3 THz frequency range, where existing sources remain limited. It relies on the strong light–matter interaction between the non-equidistant Landau levels of Dirac-type electrons in HgTe and THz cavities or resonators, enabling the prospect of coherent radiation generation in a yet unexplored regime.

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.