456 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institut national de recherche en sciences et technologies du numériqueFR40 papers
- Centre Automatique et SystèmesFR24 papers
- Centre National de la Recherche ScientifiqueFR22 papers
- Université Paris Sciences et LettresFR20 papers
- École Nationale Supérieure des Mines de ParisFR18 papers
- École Normale Supérieure - PSLFR17 papers
- Sorbonne UniversitéFR17 papers
- Laboratoire de Physique de l'Ecole Normale SupérieureFR15 papers
- Yale UniversityUS15 papers
- Sorbonne Paris CitéFR11 papers
- Ghent UniversityBE10 papers
- Université Paris DiderotFR9 papers
50 papers
High-performance repetition cat code using fast noisy operations
Francois-Marie Le Régent, Camille Berdou, Zaki Leghtas +2
Bosonic cat qubits stabilized by two-photon driven dissipation benefit from exponential suppression of bit-flip errors and an extensive set of gates preserving this protection. The…
Correlation functions for realistic continuous quantum measurement
Pierre Guilmin, Pierre Rouchon, Antoine Tilloy
We propose a self-contained and accessible derivation of an exact formula for the -point correlation functions of the signal measured when continuously observing a quantum syste…
Structurally stable subharmonic regime of a driven quantum Josephson circuit
Michiel Burgelman, Pierre Rouchon, Alain Sarlette +1
Driven quantum nonlinear oscillators, while essential for quantum technologies, are generally prone to complex chaotic dynamics that fall beyond the reach of perturbative analysis.…
One hundred second bit-flip time in a two-photon dissipative oscillator
C. Berdou, A. Murani, U. Reglade +19
Current implementations of quantum bits (qubits) continue to undergo too many errors to be scaled into useful quantum machines. An emerging strategy is to encode quantum informatio…
Quantum computation with cat qubits
Jérémie Guillaud, Joachim Cohen, Mazyar Mirrahimi
These are the lecture notes from the 2019 Les Houches Summer School on "Quantum Information Machines". After a brief introduction to quantum error correction and bosonic codes, we…
Energetics of a Single Qubit Gate
Jeremy Stevens, Daniel Szombati, Maria Maffei +10
Qubits are physical, a quantum gate thus not only acts on the information carried by the qubit but also on its energy. What is then the corresponding flow of energy between the qub…
Efficiently Fuelling a Quantum Engine with Incompatible Measurements
Sreenath K. Manikandan, Cyril Elouard, Kater W. Murch +2
We propose a quantum harmonic oscillator measurement engine fueled by simultaneous quantum measurements of the non-commuting position and momentum quadratures of the quantum oscill…
Staggered spin-orbit interaction in a nanoscale device
L. C. Contamin, T. Cubaynes, W. Legrand +9
The coupling of the spin and the motion of charge carriers stems directly from the atomic structure of a conductor. It has become an important ingredient for the emergence of topol…
Magnifying quantum phase fluctuations with Cooper-pair pairing
W. C. Smith, M. Villiers, A. Marquet +6
Remarkably, complex assemblies of superconducting wires, electrodes, and Josephson junctions are compactly described by a handful of collective phase degrees of freedom that behave…
Error Rates and Resource Overheads of Repetition Cat Qubits
Jérémie Guillaud, Mazyar Mirrahimi
We estimate and analyze the error rates and the resource overheads of the repetition cat qubit approach to universal and fault-tolerant quantum computation. The cat qubits stabiliz…
Quantum erasing the memory of Wigner's friend
Cyril Elouard, Philippe Lewalle, Sreenath K. Manikandan +3
The Wigner's friend paradox concerns one of the most puzzling problems of quantum mechanics: the consistent description of multiple nested observers. Recently, a variation of Wigne…
Number-resolved photocounter for propagating microwave mode
Rémy Dassonneville, Réouven Assouly, Théau Peronnin +2
Detectors of propagating microwave photons have recently been realized using superconducting circuits. However a number-resolved photocounter is still missing. In this letter, we d…
Multiplexed photon number measurement
Antoine Essig, Quentin Ficheux, Théau Peronnin +6
When a two-level system -- a qubit -- is used as a probe of a larger system, it naturally leads to answering a single yes-no question about the system state. Here we propose a meth…
Exponential suppression of bit-flips in a qubit encoded in an oscillator
Raphaël Lescanne, Marius Villiers, Théau Peronnin +6
A quantum system interacts with its environment, if ever so slightly, no matter how much care is put into isolating it. As a consequence, quantum bits (qubits) undergo errors, putt…
The Kerr-Cat Qubit: Stabilization, Readout, and Gates
Alexander Grimm, Nicholas E. Frattini, Shruti Puri +6
Quantum superpositions of macroscopically distinct classical states, so-called Schrödinger cat states, are a resource for quantum metrology, quantum communication, and quantum comp…
Repetition Cat Qubits for Fault-Tolerant Quantum Computation
Jérémie Guillaud, Mazyar Mirrahimi
We present a 1D repetition code based on the so-called cat qubits as a viable approach toward hardware-efficient universal and fault-tolerant quantum computation. The cat qubits th…
Benchmarking maximum-likelihood state estimation with an entangled two-cavity state
Valentin Métillon, Stefan Gerlich, Michel Brune +3
The efficient quantum state reconstruction algorithm described in [P. Six et al., Phys. Rev. A 93, 012109 (2016)] is experimentally implemented on the non-local state of two microw…
Highly coherent spin states in carbon nanotubes coupled to cavity photons
T. Cubaynes, M. R. Delbecq, M. C. Dartiailh +8
Spins confined in quantum dots are considered as a promising platform for quantum information processing. While many advanced quantum operations have been demonstrated, experimenta…
Detecting itinerant microwave photons with engineered non-linear dissipation
Raphaël Lescanne, Samuel Deléglise, Emanuele Albertinale +6
Single photon detection is a key resource for sensing at the quantum limit and the enabling technology for measurement based quantum computing. Photon detection at optical frequenc…
Experimental implementation of a Raman-assisted six-quanta process
S. O. Mundhada, A. Grimm, J. Venkatraman +9
Nonlinear processes in the quantum regime are essential for many applications, such as quantum-limited amplification, measurement and control of quantum systems. In particular, the…
Stabilized Cat in Driven Nonlinear Cavity: A Fault-Tolerant Error Syndrome Detector
Shruti Puri, Alexander Grimm, Philippe Campagne-Ibarcq +7
In quantum error correction, information is encoded in a high-dimensional system to protect it from the environment. A crucial step is to use natural, low-weight operations with an…
Structural instability of driven Josephson circuits prevented by an inductive shunt
Lucas Verney, Raphaël Lescanne, Michel H. Devoret +2
Superconducting circuits are a versatile platform to implement a multitude of Hamiltonians which perform quantum computation, simulation and sensing tasks. A key ingredient for rea…
Observing the escape of a driven quantum Josephson circuit into unconfined states
Raphaël Lescanne, Lucas Verney, Quentin Ficheux +4
Josephson circuits have been ideal systems to study complex non-linear dynamics which can lead to chaotic behavior and instabilities. More recently, Josephson circuits in the quant…
Demonstration of an effective ultrastrong coupling between two oscillators
Danijela Marković, Sébastien Jezouin, Quentin Ficheux +6
When the coupling rate between two quantum systems becomes as large as their characteristic frequencies, it induces dramatic effects on their dynamics and even on the nature of the…