Landry Bretheau graduated from Ecole polytechnique in 2005 and then completed his Ph.D. at CEA Saclay. Next, he conducted two successive post-docs at ENS (France) and MIT (USA). Since 2017, he has been building-up a new laboratory – QCMX Lab – together with his colleague Jean-Damien Pillet, which explores the physics of Hybrid Quantum Circuits. To develop this new activity, Landry Bretheau was awarded a Young Team Fellowship from l’X, a Young Researcher Grant from the French National Research Agency and an ERC** Starting Grant from the European Research Council. His work has led to major contributions in the fields of Mesoscopic Superconductivity and Quantum Circuits and was awarded the X Thesis Award and the 2020 Nicholas Kurti Science Prize. *PMC: a joint research unit CNRS, École Polytechnique - Institut Polytechnique de Paris. **Under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 947707).