698 citations · 986 across the 9 of their papers we have counts for
9 papers
Cat-qubit-inspired gate on cos() qubits
Catherine Leroux, Alexandre Blais
For qubits based on voltage-controlled semiconductor nanowire Josephson junctions we introduce a single-qubit gate inspired by the noise-bias preserving gate of the…
Nonreciprocal devices based on voltage-tunable junctions
Catherine Leroux, Adrian Parra-Rodriguez, Ross Shillito +6
We propose to couple the flux degree of freedom of one mode with the charge degree of freedom of a second mode in a hybrid superconducting-semiconducting architecture. Nonreciproci…
Extensible circuit-QED architecture via amplitude- and frequency-variable microwaves
Agustin Di Paolo, Catherine Leroux, Thomas M. Hazard +4
We introduce a circuit-QED architecture combining fixed-frequency qubits and microwave-driven couplers. In the appropriate frame, the drive parameters appear as tunable knobs enabl…
Realizing Repeated Quantum Error Correction in a Distance-Three Surface Code
Sebastian Krinner, Nathan Lacroix, Ants Remm +13
Quantum computers hold the promise of solving computational problems which are intractable using conventional methods. For fault-tolerant operation quantum computers must correct e…
Superconducting coupler with exponentially large on-off ratio
Catherine Leroux, Agustin Di Paolo, Alexandre Blais
Tunable two-qubit couplers offer an avenue to mitigate errors in multiqubit superconducting quantum processors. However, most couplers operate in a narrow frequency band and target…
Accurate methods for the analysis of strong-drive effects in parametric gates
Alexandru Petrescu, Camille Le Calonnec, Catherine Leroux +6
The ability to perform fast, high-fidelity entangling gates is an important requirement for a viable quantum processor. In practice, achieving fast gates often comes with the penal…
Heisenberg-limited spin-squeezing via bosonic parametric driving
Peter Groszkowski, Hoi-Kwan Lau, C. Leroux +2
Spin-spin interactions generated by a detuned cavity are a standard mechanism for generating highly entangled spin squeezed states. We show here how introducing a weak detuned para…
Enhancing cavity QED via anti-squeezing: synthetic ultra-strong coupling
C. Leroux, L. C. G. Govia, A. A. Clerk
We present and analyze a method where parametric (two-photon) driving of a cavity is used to exponentially enhance the light-matter coupling in a generic cavity QED setup, with tim…
Simple variational ground state and pure cat state generation in the quantum Rabi model
C. Leroux, L. C. G. Govia, A. A. Clerk
We introduce a simple, physically-motivated variational ground state for the quantum Rabi model, and demonstrate that it provides a high-fidelity approximation of the true ground s…