Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session S72: Quantum Error Correction III
8:00 AM–11:00 AM,
Thursday, March 9, 2023
Room: Room 406
Sponsoring
Unit:
DQI
Chair: Dany Lachance-Quirion, Nord Quantique
Abstract: S72.00003 : Passive two-photon dissipation for bit-flip error correction of a cat code
8:24 AM–8:36 AM
Presenter:
Antoine Marquet
(Ecole Normale Supérieure de Lyon / ALICE & BOB - University)
Authors:
Antoine Marquet
(Ecole Normale Supérieure de Lyon / ALICE & BOB - University)
Antoine Essig
(ALICE & BOB)
Nathanael Cottet
(ALICE & BOB)
Anil Murani
(ALICE & BOB)
Emanuele Albertinale
(ALICE & BOB)
Jérémie Guillaud
(ALICE & BOB)
Theau Peronnin
(ALICE & BOB)
Sebastion Jezouin
(ALICE & BOB)
Benjamin Huard
(Ecole Normale Supérieure de Lyon / ALICE & BOB)
Raphael Lescanne
(ALICE & BOB)
interest, autonomous correction was successfully demonstrated for cat codes, where the logical
|0〉 and |1〉 states are coherent states of opposite amplitudes |α〉 and | − α〉 in a superconducting
resonator with single-photon loss rates κ1 as low as possible. They correct bit-flip errors by either
using the non-linearity of the oscillator or parametrically pumping couplers to produce two-photon
dissipation at a rate κ2. The bit-flip time increases exponentially with |α|2 while the phase-flip rate
only increases linearly with |α|2.
In this work, we introduce and experimentally demonstrate a new superconducting circuit designed
to correct for bit-flip errors of cat codes. Crucially, the two-photon dissipation does not require any
pump, so that a single drive is required to stabilize the qubit manifold. This is obtained by non-
linearly coupling the cat qubit to a buffer mode that resonates at twice the frequency of the cat qubit.
We experimentally demonstrate unprecedented ratios κ2/κ1, so that bit flip times well over a ms can
be reached with a few photons only. We also demonstrate quantum gates on this corrected cat qubit.
This work was partly supported by the grant ANR-19-QUAN-0006.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700