202 citations · 910 across the 15 of their papers we have counts for
5 papers · 1 filter
Generating and verifying entangled itinerant microwave fields with efficient and independent measurements
H. S. Ku, W. F. Kindel, F. Mallet +5
By combining a squeezed propagating microwave field and an unsqueezed vacuum field on a hybrid (microwave beam-splitter), we generate entanglement between the two output modes. We…
Persistent control of a superconducting qubit by stroboscopic measurement feedback
Philippe Campagne-Ibarcq, Emmanuel Flurin, Nicolas Roch +6
Making a system state follow a prescribed trajectory despite fluctuations and errors commonly consists in monitoring an observable (temperature, blood-glucose level...) and reactin…
Quantum Heating of a nonlinear resonator probed by a superconducting qubit
F. R. Ong, M. Boissonneault, F. Mallet +5
We measure the quantum fluctuations of a pumped nonlinear resonator, using a superconducting artificial atom as an in-situ probe. The qubit excitation spectrum gives access to the…
Quantum state tomography of an itinerant squeezed microwave field
F. Mallet, M. A. Castellanos-Beltran, H. S. Ku +6
We perform state tomography of an itinerant squeezed state of the microwave field prepared by a Josephson parametric amplifier (JPA). We use a second JPA as a pre-amplifier to impr…
Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing
H. S. Ku, F. Mallet, L. R. Vale +4
We report on the design, fabrication and testing of two superconducting passive microwave components, a quadrature hybrid and a 20 dB directional coupler. These components are desi…