Profil personnel
Personal profile
After joining École Polytechnique in 2011, where he specialized in condensed matter physics, he obtained a Master's degree in Physics from the Freie Universität Berlin, where he studied the growth of EuS films on InAs and InP substrates.
He then completed his PhD from 2015 to 2018 at the Collège de France in Paris, where he developed a spectrometer based on the Josephson effect in tunnel junctions between two superconductors separated by an insulator. When a DC voltage is applied, a Cooper pair can tunnel through only if it emits a photon with energy proportional to the applied voltage. The absorption of these photons is directly observed in the current-voltage characteristic of the junction as a current peak.
Following this, he undertook a two-year postdoctoral fellowship at the University of Sherbrooke in Quebec. There, he continued to investigate voltage-biased Josephson junctions. By exploiting the non-linearity of a junction, he developed a photomultiplier capable of converting a microwave photon at one frequency into several photons at another frequency. He successfully demonstrated a threefold multiplication of the injected photons.
He joined the QCMX team as a postdoctoral researcher in October 2021 to study Andreev bound states in carbon nanotubes. To observe these states, he plans to use a new two-tone spectroscopy technique that improves upon the one he developed during his PhD.
In September 2022, he was appointed Assistant Professor in the same laboratory, where he is now working on the development of protected superconducting qubits.
Empreinte digitale
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Collaborations et principaux domaines de recherche des cinq dernières années
Résultat de recherche
- 13 Article
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Aluminum junctions with well-transmitted channels: A platform for higher-harmonic Josephson elements
Griesmar, J., Riechert, H., Peugeot, A., Hantute, M., Annabi, S., Girit, Steffensen, G. O., Yeyati, A. L., Arrighi, E., Bretheau, L. & Pillet, J. D., 1 déc. 2025, Dans: Physical Review Applied. 24, 6, 064065.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Influence of bias-voltage noise on the inelastic cooper-pair tunneling amplifier (ICTA)
Martel, U., Albert, R., Blanchet, F., Griesmar, J., Ouellet, G., Therrien, H., Nehra, N., Bourlet, N., Peugeot, A. & Hofheinz, M., 17 févr. 2025, Dans: Applied Physics Letters. 126, 7, 074001.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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The carbon nanotube gatemon qubit
Riechert, H., Annabi, S., Peugeot, A., Duprez, H., Hantute, M., Watanabe, K., Taniguchi, T., Arrighi, E., Griesmar, J., Pillet, J. D. & Bretheau, L., 1 déc. 2025, Dans: Nature Communications. 16, 1, 7197.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Josephson junctions based on ultraclean carbon nanotubes
Annabi, S., Arrighi, E., Peugeot, A., Riechert, H., Griesmar, J., Watanabe, K., Taniguchi, T., Bretheau, L. & Pillet, J. D., 1 déc. 2024, Dans: Physical Review Applied. 22, 6, 064035.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Microwave Photon-Number Amplification
Albert, R., Griesmar, J., Blanchet, F., Martel, U., Bourlet, N. & Hofheinz, M., 1 janv. 2024, Dans: Physical Review X. 14, 1, 011011.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Two-Tone spectroscopy of high-frequency quantum circuits with a Josephson emitter
Peugeot, A., Riechert, H., Annabi, S., Balembois, L., Villiers, M., Flurin, E., Griesmar, J., Arrighi, E., Pillet, J. D. & Bretheau, L., 1 déc. 2024, Dans: Physical Review Applied. 22, 6, 064027.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Josephson diode effect in Andreev molecules
Pillet, J. D., Annabi, S., Peugeot, A., Riechert, H., Arrighi, E., Griesmar, J. & Bretheau, L., 1 juil. 2023, Dans: Physical Review Research. 5, 3, 033199.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Absorptive filters for quantum circuits: Efficient fabrication and cryogenic power handling
Paquette, A., Griesmar, J., Lavoie, G., Albert, R., Blanchet, F., Grimm, A., Martel, U. & Hofheinz, M., 19 sept. 2022, Dans: Applied Physics Letters. 121, 12, 124001.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Superconducting on-chip spectrometer for mesoscopic quantum systems
Griesmar, J., Rodriguez, R. H., Benzoni, V., Pillet, J. D., Smirr, J. L., Lafont, F. & Girit, 1 déc. 2021, Dans: Physical Review Research. 3, 4, A76.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
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Transconductance quantization in a topological Josephson tunnel junction circuit
Peyruchat, L., Griesmar, J., Pillet, J. D. & Girit, 29 mars 2021, Dans: Physical Review Research. 3, 1, 013289.Résultats de recherche: Contribution à un journal › Article › Revue par des pairs
Accès ouvert