Quantum Circuit Group

QUANTUM CIRCUIT GROUP

Ecole Normale Supérieure de Lyon

Our research group explores the physics of information in quantum devices, which we design, realize and measure. These objects can be viewed as quantum machines processing information. In contrast with ordinary devices, in which quantum mechanics enters only at the level of individual electrons, the degrees of freedom of these machines at the signal level behave according to the laws of quantum mechanics.
Topics of our current interest include amplification of quantum signals, electron spin resonance at the nanoscale, quantum feedback and trajectory, thermodynamics of quantum information, microwave quantum optics, quantum error correction and quantum measurement.
The Quantum Circuit group was funded in 2016 when Benjamin Huard became professor in Ecole Normale Supérieure of Lyon, therefore leaving the Quantum Electronics Group he cofunded in 2008 with Michel Devoret at Ecole Normale Supérieure of Paris. Audrey Bienfait joined the group late in 2019 as a CNRS researcher.

We are looking for post-docs, to work on experiments if you're interested!

Our group is a member of the Laboratoire International Associé Laboratoire sur les Circuits et Matériaux Quantiques (LIA LCMQ), of the Groupement de Recherche du CNRS Physique Mésoscopique (GDR 2426) and of the Groupement de Recherche du CNRS Information Quantique (GDR 3322).

2022, Group in front of Confluence museum, Lyon

2022, Antoine and Romain at the lathe in January, Lyon

2021, Hector and Arne on Sans Souci in November , Lyon

2021, Reouven tuning Tete d'Or in November, Lyon

2020, testing the solidity of the frames in October, Lyon

2020, mounting a multiplexing counter in October, Lyon

2020, Audrey and Benjamin in October, Lyon

2020, group in the fridge room in October, Lyon

2020, Jeremy and Arne downstairs in October, Lyon

2020, Antoine and Théau in October, Lyon

2020, PhD degree party for Théau in June, Lyon

2020, transfering Helium 3 in June, ENS de Lyon

2020, installing the fridges in May, ENS de Lyon

2020, delivery of the fridges in April, ENS de Lyon

2020, group with Clara in January, ENS de Lyon

2019, preparing the fridge for cool down, ENS de Lyon

2019, installing the Plassys evaporator, ENS de Lyon

2017, lab inauguration (by Helene Blehaut)

2013, Manu shakes hands with the president

2010, Cryoconcept fridge finally installed!

2010, we bring the Cryoconcept fridge in

MEMBERS

FACULTY

Audrey Bienfait

Audrey completed her Ph.D. in the Quantronics group at CEA Saclay (France) in 2016. There, she worked with Patrice Bertet on coupling bismuth donor spins to high quality factor small-mode-volume superconducting resonators. The experiments applied circuit quantum electrodynamics techniques to electron spin resonance and improved the spin signal detection sensitivity and implemented a spin initialization mechanism via the Purcell effect. She then realized a post-doc in the Cleland group at the University of Chicago (USA), where she coupled remote superconducting qubits using traveling phonons and realized acoustic interferometry experiments. In 2019, she joined the Quantum Circuit group as a CNRS researcher. She received the Bruker thesis prize and a Paris-Saclay university award for her graduate research work. Her current research interests are electronic spins, superconducting circuits, and various microwave transduction schemes. Publication list.

Benjamin Huard

Benjamin Huard graduated from the Ecole Normale Supérieure of Paris in 2003 and did his PhD studies in the Quantronics group at CEA Saclay (France) with Hugues Pothier. There, he performed experiments aiming at investigating the behavior of electrons in mesoscopic metallic and superconducting conductors. In 2006, he joined the Goldhaber-Gordon group at Stanford University (USA) as a post-doc fellow, and observed the Klein tunneling of electrons in graphene for the first time. In 2008, as a CNRS researcher, he cofounded the Quantum Electronics group at Ecole Normale Supérieure (Paris, France) with Michel Devoret. Since then, he worked on superconducting circuits in which he worked on quantum measurement and feedback, thermodynamics of quantum information, microwave quantum optics. He is now a professor at Ecole Normale Supérieure de Lyon where he moved in 2017 and leads the Quantum Circuit Group together with Audrey Bienfait. He is a scientific adviser of the Alice and Bob company since 2021. Publication list

STUDENTS AND POSTDOCS

Cyril Elouard

Post-doc Inria since 2021

He did his PhD at Neel Institute (Grenoble) with A. Auffèves on quantum stochastic thermodynamics. After two postdocs on quantum measurement theory in the Jordan group at University of Rochester and in the Quantic team (Paris) with Alain Sarlette, he joined Inria Lyon in October 2021 to work on quantum thermodynamics under his ANR project QSTEAM.

Camille Lombard Latune

Post-doc since 2021

He did his PhD with Luiz Davidovich at the Universidade Federal do Rio de Janeiro (Brasil) on quantum metrology. He joined our group within the project QSTEAM after a first post-doc in quantum thermodynamics within the Petruccione group of the University of KwaZulu-Natal (South Africa).

Yannick Seis

Post-doc since 2022

He did his PhD with Albert Schliesser at the Niels Bohr Institute in Copenhagen (Denmark) on quantum optomechanics. He joined our group within the project OCTAVES to make quantum circuits more robust to large pump power.

Réouven Assouly

PhD student since 2019

He is developing quantum information protocols using quantum networks of superconducting circuits under the Quantum Flagship project QMiCS.

Antoine Marquet

PhD student since 2020

He is developing new devices and protocols for quantum error correction using bosonic codes in partnership with the startup Alice and Bob and within the Qucos European grant.

Arne Bahr

PhD student since 2020

He is developing quantum circuits for experiments on electron spin resonance at the nanoscale with the support of Idex Lyon.

Hector Hutin

PhD student since 2021

Hector performs experiments on the backaction of fluorescence measurement and on the use of neural networks for quantum control.

Matteo Boselli

PhD student soon

He participates in the Indigo project to develop and build an electron paramagnetic resonance (EPR) spectroscopy tool based on quantum circuit technology.

QUANTIC TEAM

We closely collaborate with the Quantic team which was funded in 2015, and of which we were officially members before moving to Lyon. Quantic is hosted in Paris by Inria, Mines ParisTech and Ecole Normale Supérieure of Paris. The permanent members are listed here.

Philippe Campagne-Ibarcq (Inria, LPENS)

Zaki Leghtas (Mines ParisTech, LPENS)

Mazyar Mirrahimi (Inria)

Alexandru Petrescu (Mines ParisTech, Inria)

Pierre Rouchon (Mines ParisTech)

Alain Sarlette (Inria)

Antoine Tilloy (Mines ParisTech, Inria)

Alumni

Alexis Jouan

Alexis was a post-doc from 2020 to 2022. He is now assistant professor at ESPCI, Paris.

Rémy Dassonneville

Rémy was a post-doc from 2019 to 2022. He is now a post-doc at IM2NP, Marseille.

Antoine Essig

Antoine was a PhD student from 2018 to 2021. He is now working at Alice and Bob.

Jeremy Stevens

Jeremy was a PhD student from 2017 to 2021. He is now working at Alice and Bob.

Daniel Szombati

Daniel was a post-doc from 2019 to 2021. He now works at Qilimanjaro

Stefan Zeppetzauer

Stefan spent half a year with us before joining the group of Arkady Fedorov at Queensland University (Australia) in 2021.

Sébastien Jezouin

Sébastien was a post-doc from 2015 to 2017 in our group in Paris and later on from 2019 to 2020 in Lyon to develop patents with Pulsalys. He is now working at Alice and Bob. He is co-mentoring the PhD work of Antoine Marquet under our active collaboration with the startup.

Théau Peronnin

Théau was a PhD student from 2016 to 2020. He got the grand prize i-PhD 2019 and is the co-founder and now CEO of Alice and Bob, a quantum computing startup based in Paris, France.

Nathanaël Cottet

Nathanaël was a PhD student from 2015 to 2018, then postdoc for the first half of 2019. He is now working at Alice and Bob.

Quentin Ficheux

Quentin was a PhD student from 2015 to 2018. Now permanent CNRS researcher in the Quanteca team at Institut Neel, Grenoble, France.

Danijela Marković

Danijela was a PhD student from 2014 to 2017. Now permanent CNRS researcher teaming up with Julie Grollier at CNRS Thales in Palaiseau, France.

Zaki Leghtas

Zaki Leghtas worked in the Quantum Electronics group from 2015 to 2017 as a researcher of Mines ParisTech. He is now part of the Quantic team at ENS Paris.

Raphaël Lescanne

Raphaël realized the first part of his PhD work between 2016 and 2017 in the group with his advisor Zaki Leghtas at ENS Paris. He is the co-founder and now CTO of the startup Alice and Bob.

Landry Bretheau

Landry was a post-doc for 2 years in 2013-2015. Now professor at Ecole Polytechnique.

Vladimir Manucharyan

Vlad was a visitor for a few months in 2013. Now professor at the Ecole Polytechnique Federale de Lausanne, Switzerland.

Jean-Damien Pillet

Jean-Damien was a post-doc for 1 year in 2012. Now associate professor at Ecole Polytechnique.

François Mallet

Francois Mallet worked in the Quantum Electronics group from 2011 to 2016 as an associate professor at Université Pierre et Marie Curie.

Philippe Campagne

Philippe was a PhD student from 2011 to 2015. Now a permanent researcher in the Quantic team at Inria Paris.

Emmanuel Flurin

Emmanuel was a PhD student from 2011 to 2014. Now permanent researcher in the Quantronics group at CEA Saclay.

Nicolas Roch

Nicolas was a post-doc for 3 years from 2010 to 2012. Now CNRS researcher at Institut Néel in Grenoble, France.

François Nguyen

François was a post-doc for 1 year in 2008-2009.

Michel Devoret

Michel H. Devoret, a professor at Yale University since 2002, was appointed to the Chair of Mesoscopic Physics at the College de France in Paris, where he lectured yearly from 2007 to 2012. He co-funded the Quantum electronics group in 2008 with Benjamin Huard and worked in the group for the whole duration of his chair. Website

Former interns

Sepideh Abdollahi (2022)

Antoine Brillant (2022)

Denis Benatre (2022)

Romain Cazali (2021)

Guillaume Cauquil (2021)

Solenn Cances (2021)

Victor Champain (2021)

Bastien Voirin (2021)

Sarah Wattelier (2020)

Corentin Picot (2020)

Clément Panais (2020)

Hector Hutin (2020)

Guillaume Cauquil (2019)

Hubert Souquet-Basiege (2018)

Clément Gouriou (2018)

Megan Yamoah (2018)

Marco Fellous Asiani (2017)

Charles Babin (2017)

Théau Peronnin (2015)

Pierre Heidmann (2014)

Cyprien Poirier (2014)

Yael Gagnepain (2013)

Jules Denier (2012)

Lauriane Contamin (2012)

Nathanael Cottet (2012)

Lola El Sahmarany (2010)

Florent Baboux (2010)

Elisabeth Bonnefoy (2010)

PUBLICATIONS

PREPRINTS

Demonstration of Quantum Advantage in Microwave Quantum Radar R. Assouly, R. Dassonneville, T. Peronnin, A. Bienfait and B. Huard arXiv:2211.05684

Cloaking a qubit in a cavity C. Lledó, R. Dassonneville, A. Moulinas, J. Cohen, R. Shillito, A. Bienfait, B. Huard, A. Blais arXiv:2211.05758

Anomalous energy exchanges and Wigner function negativities in a single qubit gate M. Maffei, C. Elouard, B. O. Goes, B. Huard, A. N. Jordan, A. Auffèves arXiv:2210.05323

A topologically protected quantum dynamo effect in a driven spin-boson model E. Bernhardt, C. Elouard, K. Le Hur arXiv:2208.01707

Emergence of the laws of thermodynamics for autonomous, arbitrary quantum systems C. Elouard, C. Lombard Latune arXiv:2207.04850

Propagating Quantum Microwaves: Towards Applications in Communication and Sensing M. Casariego, E. Zambrini Cruzeiro, S. Gherardini, T. Gonzalez-Raya, R. André, G. Frazão, G. Catto, M. Möttönen, D. Datta, K. Viisanen, J. Govenius, M. Prunnila, K. Tuominen, M. Reichert, M. Renger, K. G. Fedorov, F. Deppe, H. van der Vliet, A. J. Matthews, Y. Fernández, R. Assouly, R. Dassonneville, B. Huard, M. Sanz, Y. Omar arXiv:2205.11424

ARTICLES

Energetics of a Single Qubit Gate J. Stevens, D. Szombati, M. Maffei, C. Elouard, R. Assouly, N. Cottet, R. Dassonneville, Q. Ficheux, S. Zeppetzauer, A. Bienfait, A. N. Jordan, A. Auffèves, B. Huard (2022) Phys. Rev. Lett. 129, 110601 (open access PDF).

Deep Reinforcement Learning for Quantum State Preparation with Weak Nonlinear Measurements R. Porotti, A. Essig, B. Huard, F. Marquardt (2022), Quantum 6, 747 ( arXiv:2107.08816)

Topological power pumping in quantum circuits J. Luneau, C. Dutreix, Q. Ficheux, P. Delplace, B. Douçot, B. Huard, D. Carpentier (2022), Phys. Rev. Research 4, 013169 (arXiv:2109.12897).

Multiplexed photon number measurement A. Essig, Q. Ficheux, T. Peronnin, N. Cottet, R. Lescanne, A. Sarlette, P. Rouchon, Z. Leghtas, B. Huard (2021), Phys. Rev. X 11, 031045 (open access PDF).

Dissipative stabilization of squeezing beyond 3 dB in a microwave mode R. Dassonneville, R. Assouly, T. Peronnin, A. A. Clerk, A. Bienfait, B. Huard (2021), PRX Quantum 2, 020323 (open access PDF). See synopsis in Physics 14, s59.

Number-resolved photocounter for propagating microwave mode R. Dassonneville, R. Assouly, T. Peronnin, P. Rouchon, B. Huard (2020), Phys. Rev. Applied 14, 044022 ( open access PDF)

An Interaction-Free Quantum Measurement-Driven Engine C. Elouard, M. Waegell, B. Huard and A.N. Jordan (2020), Found. Phys. (open access PDF)

Quantum adiabatic elimination at arbitrary order for photon number measurement A. Sarlette, P. Rouchon, A. Essig, Q. Ficheux, B. Huard, 2020 IFAC World Congress, IFAC, Jul 2020, Berlin, Germany (open access PDF)

Sequential dispersive measurement of a superconducting qubit T. Peronnin, D. Marković, Q. Ficheux and B. Huard (2020), Phys. Rev. Lett. 124, 180502 (open access PDF)

The energetic cost of work extraction J. Monsel, M. Fellous-Asiani, B. Huard and A. Auffèves (2020), Phys. Rev. Lett. 124, 130601 (open access PDF)

Exponential suppression of bit-flips in a qubit encoded in an oscillator R. Lescanne, M. Villiers, T. Peronnin, A. Sarlette, M. Delbecq, B. Huard, T. Kontos, M. Mirrahimi, Z. Leghtas (2020), Nature Physics (open access PDF)

Injection locking and parametric locking in a superconducting circuit D. Marković, J.-D. Pillet, E. Flurin, N. Roch and B. Huard (2019), Phys. Rev. Applied 12, 024034 (open access PDF)

Escape of a Driven Quantum Josephson Circuit into Unconfined States R. Lescanne, L. Verney, Q. Ficheux, M. H. Devoret, B. Huard, M. Mirrahimi and Z. Leghtas (2019), Phys. Rev. Applied 11, 014030 (open access PDF)

Maxwell's demon in superconducting circuits N. Cottet and B. Huard (2019). In: Binder F., Correa L., Gogolin C., Anders J., Adesso G. (eds) Thermodynamics in the Quantum Regime. Fundamental Theories of Physics, vol 195. Springer, Cham (open access PDF)

Demonstration of an effective ultrastrong coupling between two oscillators D. Marković, S. Jezouin, Q. Ficheux, S. Fedortchenko, S. Felicetti, T. Coudreau, P. Milman, Z. Leghtas and B. Huard (2018), Phys. Rev. Lett. 121, 040505 (open access PDF)

Dynamics of a qubit while simultaneously monitoring its relaxation and dephasing Q. Ficheux, S. Jezouin, Z. Leghtas and B. Huard (2018), Nat. Comm. 9, 1926 (supplementary information). Click on the video to access all experimental videos.

Observing a quantum Maxwell demon at work N. Cottet, S. Jezouin, L. Bretheau, P. Campagne-Ibarcq, Q. Ficheux, J. Anders, A. Auffèves, R. Azouit, P. Rouchon and B. Huard (2017), PNAS 114, 7561 (open access PDF)

Extracting work from quantum measurement in Maxwell demon engines C. Elouard, D. Herrera-Marti, B. Huard, A. Auffèves (2017), Phys. Rev. Lett. 118, 260603 (open access PDF)

Quantum simulation of ultrastrongly coupled bosonic modes using superconducting circuits S. Fedortchenko, S. Felicetti, D. Marković, S. Jezouin, A. Keller, T. Coudreau, B. Huard, and P. Milman (2017), Phys. Rev. A 95, 042313 (open access PDF)

Using Spontaneous Emission of a Qubit as a Resource for Feedback Control P. Campagne-Ibarcq, S. Jezouin, N. Cottet, P. Six, L. Bretheau, F. Mallet, A. Sarlette, P. Rouchon, and B. Huard (2016), Phys. Rev. Lett. 117, 060502 (open access PDF, supplementary information)

Observing quantum state diffusion by heterodyne detection of fluorescence P. Campagne-Ibarcq, P. Six, L. Bretheau, A. Sarlette, M. Mirrahimi, P. Rouchon, and B. Huard (2016), Phys. Rev. X 6, 011002 (open access PDF, supplementary information)

Anatomy of Fluorescence: Quantum trajectory statistics from continuously measuring spontaneous emission A.N. Jordan, A. Chantasri, P. Rouchon and B. Huard (2016), Quantum Stud.: Math. Found. 3: 237. (open access PDF)

Quantum state tomography with measurement imperfections and decoherence P. Six, P. Campagne-Ibarcq, I. Dotsenko, A. Sarlette, B. Huard, and P. Rouchon (2016), Phys. Rev. A 93, 012109 (open access PDF)

Parameter estimation from measurements along quantum trajectories P. Six, P. Campagne-Ibarcq, L. Bretheau, B. Huard, and P. Rouchon (2015), 54th IEEE Conference on Decision and Control

Les microprocesseurs du futur B. Huard (2015), La Recherche 501, 62

Optimal design for the Josephson mixer J.-D. Pillet, E. Flurin, F. Mallet, and B. Huard (2015), Applied Physics Letters 106, 222603 (open access, supplementary information)

Quantum dynamics of an electromagnetic mode that cannot contain N photons L. Bretheau, P. Campagne-Ibarcq, E. Flurin, F. Mallet, and B. Huard (2015), Science, 348, 776 (open access PDF, supplementary information, featured in Arstechnica and Phys.org)

Superconducting quantum node for entanglement and storage of microwave radiation E. Flurin, N. Roch, J.-D. Pillet, F. Mallet and B. Huard (2015), Phys. Rev. Lett. 114, 090503 (open access PDF, supplementary information)

Observing interferences between past and future quantum states in resonance fluorescence P. Campagne-Ibarcq, L. Bretheau, E. Flurin, A. Auffèves, F. Mallet and B. Huard (2014), Phys. Rev. Lett. 112, 180402 (open access PDF, supplementary information)

Stabilizing the trajectory of a superconducting qubit by projective measurement feedback P. Campagne-Ibarcq, E. Flurin, N. Roch, D. Darson, P. Morfin, M. Mirrahimi, M. H. Devoret, F. Mallet and B. Huard (2013), Phys. Rev. X 3, 021008 (open access PDF, supplementary information)

Widely tunable, non-degenerate three-wave mixing microwave device operating near the quantum limitN. Roch, E. Flurin, F. Nguyen, P. Morﬁn, P. Campagne-Ibarcq, M. H. Devoret and B. Huard (2012), Phys. Rev. Lett. 108, 147701 (open access PDF, supplementary information)

Generating Entangled Microwave Radiation Over Two Transmission Lines E. Flurin, N. Roch, F. Mallet, M. H. Devoret and B. Huard (2012), Phys. Rev. Lett. 109, 183901 (open access PDF,supplementary information, Viewpoint in Physics )

Strong measurement and quantum feedback for persistent Rabi oscillations in circuit QED experiments M. Mirrahimi, B. Huard, and M. H. Devoret, Decision and Control (CDC), 2012 IEEE 51st Annual Conference on (open access PDF)

THESES

Photon counting with a multiplexed dispersive readout A. Essig, PhD thesis, Ecole Normale Supérieure de Lyon (2021)

Effect of the Environment on Fluxonium Qubits and Thermodynamics of Quantum Measurement J. Stevens, PhD thesis, Ecole Normale Supérieure de Lyon (2021)

Building and operating a quantum node of a microwave network T. Peronnin, PhD thesis, Ecole Normale Supérieure de Lyon (2020)

Quantum trajectories with incompatible decoherence channels Q. Ficheux, PhD thesis, Ecole Normale Supérieure Paris (2018)

Energy and Information in Fluorescence with Superconducting Circuits N. Cottet, PhD thesis, Ecole Normale Supérieure Paris (2018)

Applications of the Josephson mixer : ultrastrong coupling, quantum node and injection locking in conversion D. Marković, PhD thesis, Ecole Normale Supérieure Paris (2017)

Measurement backaction and feedback in superconducting circuits P. Campagne-Ibarcq, PhD thesis, Ecole Normale Supérieure Paris (2015)

Josephson mixer, swiss army knife for microwave quantum optics E. Flurin, PhD thesis, Ecole Normale Supérieure Paris (2014)

Quantum information with superconducting circuits B. Huard, Habilitation thesis, Ecole Normale Supérieure Paris (2014)

EDITED BOOKS

Quantum microwaves Edited by B. Huard, F. Portier and M. Hofheinz (2016), Comptes Rendus Physique 17, 679-804. (Foreword)

Quantum Machines: Measurement and Control of Engineered Quantum Systems Lecture Notes of the Les Houches Summer School: Volume 96, July 2011 Edited by M. Devoret, B. Huard, R. Schoelkopf, and L. F. Cugliandolo (2014), Oxford University Press

CONTACT

Do you want to join the group?

Do you want information on what we do?

ENS Lyon Site Monod, Building M1, Rooms 111, 011 and -111
46 allée d'Italie, 69364 Lyon cedex 07, France
Email:
Phone: (+33) 4 72 72 85 59

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RECENT MEETINGS WE CO-ORGANIZED

12th colloquium on Quantum Engineering, Fundamental Aspects to Applications, November 3-5, 2021, Lyon (France).

Ecole de physique mesoscopique, October 5-15, 2021, Cargèse (Corsica, France).

2021 Les Houches cQED Workshop, June 6-11, 2021, Les Houches (France).

Les Rencontres de Moriond, January 9-16, 2021, La Thuile (Italy). (canceled by covid-19)

Les Houches Physics School, July 1-26, 2019, Les Houches (France). Quantum Information Machines.

Quantum Thermodynamics Conference 2019, June 23-28, 2019, Espoo (Finland).

Les Rencontres de Moriond, March 16-23, 2019, La Thuile (Italy).

LINKS

TLS (restricted access)

Group internal wiki (restricted access)

Alice and Bob

Qulab at Yale University

Quantronics Group at CEA Saclay

Lectures of Michel Devoret at Collège de France, Paris 2007-2012

CURRENT PROJECTS

Quantum information processing with low-frequency fluxonium qubits (2018-2021)

Information as fuel in colloids and superconducting quantum circuits (2019-2022)

Topological Revolution : from Quantum Technologies to Climate (2019-2022)

Quantum Computation with Schrödinger cat states (2020-2022)

Overcoming the limitations in the coherent driving of quantum superconducting circuits (2022-2025)

Neural networks controlling superconducting quantum circuits (2022-2025)

Robust Superconducting and hybrid Quantum bits (2022-2027)

From NISQ to LSQ: Bosonic and LDPC codes (2022-2027)

Developing an inductive spectrometer for electron paramagnetic resonance detection and imaging at the micron scale using superconducting quantum circuits (2022-2027)