Thibaut JACQMIN
Assistant Professor

Site
Sorbonne Université
Campus P. et M. Curie 75005 Paris, France
Jussieu – Corridor 13/23 – 2nd floor – Room 223
Team
Optomechanics and quantum measurements
Activity
Superconducting circuits and mechanical resonators
Contact
Phone: (+33) 1 44 27 43 04
Mail: thibaut.jacqmin@lkb.upmc.fr
BlueSky: https://bsky.app/profile/thibaut-jacqmin.bsky.social
LinkedIn: https://www.linkedin.com/in/thibautjacqmin/

Thibaut Jacqmin was recruited as a research associate professor in 2015 at Laboratoire Kastler Brossel and Sorbonne University. Previously, he achieved a PhD in the team of Isabelle Bouchoule, within the Atom Optics’group of Alain Aspect at Laboratoire Charles Fabry (Orsay University, Institutd’Optique Graduate School), on ultracold one-dimensionnal Bose gases. He obtained several results, like the experimental realization of a strongly interacting 1D Bose gas on a atom chip, and the first observation of a quasi-condensate in the regime where quantum fluctuations play a role. He then moved to the group of Jacqueline Bloch at Laboratoire de Photonique et de Nanostructures (now C2N, CNRS), where he studied polaritons in arrays of micro-cavities: in particular he realized a graphene analog based on a honeycomb lattice of micro-cavities, and performed the first direct observation of flat energy bands in 2D and 1D systems.
Research topics
- Ultra high-Q nanomechanical resonator modes
- Exotic superconducting circuits (e. g. heavy fluxonium)
- Hybrid quantum systems involving superconducting qubits and mechanical systems
- Quantum sensing (charge sensors, gravimeters, accelerometers)
- Quantum memories
- Fundamental tests (e. g. Diosi/Penrose) with hybrid quantum systems
Degrees
PhD in Physics, Orsay University (now Paris-Saclay University) 2015
ICFP master of Quantum Physics (2009)
Agrégation de Physique option Physique (2008)
(a prestigious and highly competitive French national examination conferring the highest-level qualification to teach Physics in secondary and higher education. It involves rigorous academic and pedagogical assessments, recognized as one of the top teaching credentials in France.)
B.S. of sciences, Ecole Normale Supérieure Paris-Saclay (2006)
Conferences and colloquia
January 1st 2025
INSP clean-room day, Pierre & Marie-Curie campus
Fabrication of SiN high-Q mechanical oscillators
hybridized with superconducting circuits
October 29th 2024
JMC (Journées de la Matière Condensée), Marseille
A radiofrequency superconducting qubit for quantum control of ultracoherent mechanical resonators
October 15th 2024
ANF COMSOL (Action nationale de formation), Aussois
Optimisation de membranes à cristaux phononiques: distribution du stress, analyse modale, pertes
Septembre 12th 2024
QTECH 2024 Berlin
A radiofrequency superconducting qubit for quantum control of ultracoherent mechanical resonators
May 29th 2024
DIM Quantip Days (poster)
A radiofrequency superconducting qubit for quantum control of ultracoherent mechanical resonators
Mars 25th 2024
Colloquium of Groupe Optique atomique du Laboratoire Charles Fabry de l’Institut d’Optique
A radiofrequency superconducting qubit for quantum control of ultracoherent mechanical resonators
February 9th 2024
Colloquium of Laboratoire de Physique des Lasers (LPL)
A radiofrequency superconducting qubit for quantum control of ultracoherent mechanical resonators
Publications
- Python Red Pitaya Lockbox (PyRPL): An open source software package for digital feedback control in quantum optics experiments
L. Neuhaus, M. Croquette, R. Metzdorff, S. Chua, P.-E. Jacquet, A. Journeaux, A. Heidmann, T. Briant, Thibaut Jacqmin, P.-F. Cohadon, S. Deléglise
Review of Scientific Instruments. 95, 033003 (2024), arXiv:2310.00086 - High-Sensitivity ac-Charge Detection with a MHz-Frequency Fluxonium Qubit
B.-L. Najera-Santos, R. Rousseau, K. Gerashchenko, H. Patange, A. Riva, M. Villiers, T. Briant, P.-F. Cohadon, A. Heidmann, J. Palomo, M. Rosticher, H. le Sueur, A. Sarlette, W. C. Smith, Z. Leghtas, E. Flurin, Thibaut Jacqmin, and S. Deléglise
Physical Review X 14, 011007 (2024), arXiv:2307.14329 - Recent advances toward mesoscopic quantum optomechanics
M. Croquette, S. Deléglise, T. Kawasaki, K. Komori, M. Kuribayashi, A. Lartaux-Vollard, N. Matsumoto, Y. Michimura, M. Andia, N. Aritomi, R. Braive, T. Briant, S. Briaudeau, S. B. Cataño-Lopez, S. Chua, J. Degallaix, M. Fujimoto, K. Gerashchenko, F. Glotin, P. Gruning, K. Harada, A. Heidmann, D. Hofman, P.-E. Jacquet, Thibaut Jacqmin, O. Kozlova, N. Leroy, V. Loriette, F. Loubar, T. Martel, R. Metzdorff, C. Michel, A. Mikami, L. Najera, L. Neuhaus, S. Otabe, L. Pinard, K. Suzuki, H. Takahashi, K. Takeda, Y. Tominaga, A. van de Walle, N. Yamamoto, K. Somiya, P.-F. Cohadon
AVS Quantum Sci. 5, 014403 (2023) - Frequency-dependent squeezed vacuum source for the Advanced Virgo gravitational-wave detector
F. Acernese et al.
Phys. Rev. Lett. 131, 041403 – (2023) - Laser cooling of a Planck mass object close to the quantum ground state
L. Neuhaus, R. Metzdorff, S. Zerkani, S. Chua, J. Teissier, D. Garcia-Sanchez, S. Deleglise, Thibaut Jacqmin, T. Briant, J. Degallaix, V. Dolique, G. Cagnoli, O. Le Traon, C. Chartier, A. Heidmann, P.-F. Cohadon
arXiv:2104.11648 [quant-ph], (2021) - Toward Optomechanical Parametric Instability Prediction in Ground-Based Gravitational Wave Detectors
D. E. Cohen, A. Allocca, G. Bogaert, P. Puppo, and Thibaut Jacqmin
Applied Optics Vol. 60, Issue 27, pp. 8540-8549 (2021), arXiv:2102.11070 - Probing a Two-Level System Bath via the Frequency Shift of an Off-Resonantly Driven Cavity
T. Capelle, E. Flurin, E. Ivanov, J. Palomo, M. Rosticher, S. Chua, T. Briant, P.-F. Cohadon, A. Heidmann, Thibaut Jacqmin, and S. Deléglise
Physical Review Applied 13, 034022 (2020), arXiv:1805.04397 - Irreversible Qubit-Photon Coupling for the Detection of Itinerant Microwave Photons
R. Lescanne, S. Deléglise, E. Albertinale, U. Réglade, T. Capelle, E. Ivanov, Thibaut Jacqmin, Z. Leghtas, and E. Flurin
Physical Review X 10, 021038 (2020), arXiV:1902.05102 - Edge Mode Engineering for Optimal Ultracoherent Silicon Nitride Membranes
E. Ivanov, T. Capelle, M. Rosticher, J. Palomo, T. Briant, P.-F. Cohadon, A. Heidmann, Thibaut Jacqmin, and S. Deléglise
Applied Physics Letters 117, 254102 (2020), arXiv:2010.00898 - Quantum Backaction on kg-Scale Mirrors: Observation of Radiation Pressure Noise in the Advanced Virgo Detector
F. Acernese et al.
Phys. Rev. Lett. 125, 131101 (2020) - High-Finesse Fabry-Perot cavities with Bidimensional Si3N4 Photonic-Crystal Slabs
X. Chen, C. Chardin, K. Makles, C. Caër, S. Chua, R. Braive, I. Robert-Philip, T. Briant, P.-F. Cohadon, A. Heidmann, Thibaut Jacqmin, S. Deléglise
Light Sci Appl 6, e16190 (2017), arXiv:1603.07200 - Bosonic Condensation and Disorder-Induced Localization in a Flat Band
F. Baboux, L. Ge, Thibaut Jacqmin, M. Biondi, E. Galopin, A. Lemaître, L. Le Gratiet, I. Sagnes, S. Schmidt, H. E. Türeci, A. Amo, and J. Bloch
Physical Review Letters 116, 066402 (2016), arXiv:1505.05652 - Spin-Orbit Coupling for Photons and Polaritons in Microstructures
V. G. Sala, D. D. Solnyshkov, I. Carusotto, Thibaut Jacqmin, A. Lemaître, H. Terças, A. Nalitov, M. Abbarchi, E. Galopin, I. Sagnes, J. Bloch, G. Malpuech, and A. Amo
Physical Review X 5, 011034 (2015), arXiv:1406.4816 - Edge states in polariton honeycomb lattices
M. Milićević, T. Ozawa, P. Andreakou, I. Carusotto, Thibaut Jacqmin, E. Galopin, A. Lemaître, L. Le Gratiet, I. Sagnes, J. Bloch
2D Materials 2 034012 (2015), arXiv:1504.05761 - Direct Observation of Dirac Cones and a Flatband in a Honeycomb Lattice for Polaritons
Thibaut Jacqmin, I. Carusotto, I. Sagnes, M. Abbarchi, D. D. Solnyshkov, G. Malpuech, E. Galopin, A. Lemaître, J. Bloch, and A. Amo
Physical Review Letters 112, 116402 (2014), arXiv:1310.8105 - Fractal Energy Spectrum of a Polariton Gas in a Fibonacci Quasiperiodic Potential
D. Tanese, E. Gurevich, F. Baboux, Thibaut Jacqmin, A. Lemaître, E. Galopin, I. Sagnes, A. Amo, J. Bloch, and E. Akkermans
Physical Review Letters 112, 146404 (2014), arXiv:1311.3453 - Probing correlations in a one-dimensional gas of bosons on an atom chip.
Thibaut Jacqmin
PhD thesis (2013) - Momentum distribution of one-dimensional Bose gases at the quasicondensation crossover: Theoretical and experimental investigation
Thibaut Jacqmin, B. Fang, T. Berrada,T. Roscilde, and I. Bouchoule
Physical Review A 86, 043626, (2012), arXiV:1207.2855 - Sub-Poissonian Fluctuations in a 1D Bose Gas: From the Quantum Quasicondensate to the Strongly Interacting Regime
Thibaut Jacqmin, Julien Armijo, Tarik Berrada, Karen V. Kheruntsyan, and I. Bouchoule
Physical Review Letters 106, 230405 (2011), arXiv:1103.3028 - Mapping out the quasicondensate transition through the dimensional crossover from one to three dimensions
J. Armijo, Thibaut Jacqmin, K. Kheruntsyan, and I. Bouchoule
Physical Review A 83, 021605(R) (2011), arXiv:1011.3631 - Probing Three-Body Correlations in a Quantum Gas Using the Measurement of the Third Moment of Density Fluctuations
J. Armijo, Thibaut Jacqmin, K. V. Kheruntsyan, and I. Bouchoule
Physical Review Letters 105, 230402 (2010), arXiv:1007.3713
Teaching
Bachelor courses
- LU3PY001 Quantum Physics
- LU3PY101 Quantum Physics
- 2P021 Electromagnetism
- LP365B Experimental projects (adaptative optics, holography)
- LU3PY122/124 Experimental projects (hot wire instability, electronic transport)
- Advanced geometrical and Fourier optics
- Labwork: photometry and photodetectors
- Tutorials: laser diodes
Master courses
- 4P001 Quantum physics
- 4P311B: Labwork: laser systems (Neodym-YAG laser, Q-Switch, frequency doubling, laser diodes, laser velocimetry)
- MU5PYO14/20 Python programming for experimental physicists and engineers
- MU5PYO11 Python programming for experimental physicicts and engineers
- MU5PYF31 Quantum information
- Coming soon: quantum optomechanics (ICFP)
Awards, distinctions
- 2016 Breakthrough prize: Special Breakthrough Prize In Fundamental Physics Awarded For Detection Of Gravitational Waves 100 Years After Albert Einstein Predicted Their Existence
- 2016 Gruber Cosmology Prize: awarded for the first detection of gravitational waves.
Publications in popular science journals
Un dispositif optique dédié à l’information quantique
S. Deléglise, Thibaut Jacqmin, T. Briant, P.-F. Cohadon, A. Heidmann
La Recherche, numéro 525
Pictures



