Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Q47: Superconducting Kerr Cats
3:00 PM–5:48 PM,
Wednesday, March 6, 2024
Room: 200CD
Sponsoring
Unit:
DQI
Chair: Ronan Gautier, Alice & Bob
Abstract: Q47.00005 : High coherence 2D Kerr-cat qubit: Experimental realization and technical challenges (1/2)*
4:12 PM–4:24 PM
Presenter:
AHMED HAJR
(University of California, Berkeley)
Authors:
AHMED HAJR
(University of California, Berkeley)
Bingcheng Qing
(University of California, Berkeley)
Ke Wang
(UC Berkeley)
Zahra Pedramrazi
(University of California, Berkeley)
Long B Nguyen
(UC Berkeley)
Irwin Huang
(University of Rochester)
Bibek Bhandari
(Institute for Quantum Studies, Chapman University)
Christian Juenger
(University of California, Berkeley)
Gerwin Koolstra
(University of California, Berkeley)
David I Santiago
(Lawrence Berkeley National Laboratory)
Justin G Dressel
(Chapman Univ)
Andrew N Jordan
(University of Rochester)
Irfan Siddiqi
(University of California, Berkeley)
The Kerr-cat qubit is a bosonic qubit in which the information is encoded in multi-photon cat states. The suppressed bit flip rate makes this qubit a promising candidate to implement quantum error correction codes tailored for noise-biased qubits. Moreover, its intrinsic nonlinearities enable fast logic gates and QND measurement. However, the strong two-photon pump drive, which stabilizes the cat-state, introduces both theoretical and practical challenges when large cat sizes or multi-qubit operations are desired. Here, we present an experimental realization of high-coherence Kerr-cat qubits in a 2D superconducting circuit. With a novel on-chip filter that significantly increases the qubit-pump coupling, we can generate large cats with smaller drive power and explore the bit-flip dependence on the cat size. With bit-flip times approaching 800us for a cat of size 11 photon our work paves the way towards high-coherence and scalable multi-qubit devices.
The talk is divided into two parts. This is the first part, which will discuss the motivation, concept, and design.
*Research was sponsored by the Army Research Office and was accomplished under Grant Number W911NF-23-1-0323. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government.
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