Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A28: Superconducting Qubit Gates, Measurement and Characterization
8:00 AM–11:00 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DQI
Chair: Kevin Satzinger, Google Inc - Santa Barbara
Abstract: A28.00007 : Stabilization of squeezing beyond 3 dB in a microwave resonator by reservoir engineering.*
9:12 AM–9:24 AM
Live
Presenter:
Rémy Dassonneville
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
Authors:
Rémy Dassonneville
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
Réouven Assouly
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
Théau Peronnin
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
Aashish Clerk
(Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA)
Audrey Bienfait
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
Benjamin Huard
(Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon, France)
In this work, we use two parametric pumps and a dump mode to engineer an effective coupling to an artificial squeezed reservoir. We perform in-situ Wigner tomography of the squeezed microwave mode using an ancillary superconducting qubit. We measure intraresonator squeezing as high as 6.73 +-0.03 dB, going well beyond the 3 dB limit.
*This work is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 820505
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