Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session S14: Dynamics in Quantum Circuits
8:00 AM–10:48 AM,
Thursday, March 7, 2024
Room: M100E
Sponsoring
Unit:
DCMP
Chair: Brayden Ware, University of Maryland, College Park
Abstract: S14.00003 : Linear cross-entropy in random circuits*
8:24 AM–8:36 AM
Presenter:
Brayden A Ware
(University of Maryland, College Park)
Authors:
Brayden A Ware
(University of Maryland, College Park)
Abhinav Deshpande
(IBM)
Dominik Hangleiter
(University of Maryland)
Bill Fefferman
(University of Chicago)
Alexey Gorshkov
(University of Maryland)
Michael J Gullans
(Joint Center for Quantum Information and Computer Science)
Demonstrations of quantum computational advantage and benchmarks of quantum processors via quantum random circuit sampling are based on evaluating the linear cross-entropy benchmark (XEB). We study the behavior of XEB and fidelity using a mapping of average quantities in random quantum circuits to statistical mechanics models. The average value of XEB is shown to be sensitive only to the infidelity of the noisy gates while fluctuations reveal more.
*"B.W. was supported in part by the DoE ASCR Accelerated Research in Quantum Computing program (award No.~DE-SC0020312)."
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