Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session UU05: V: Quantum Optimal Control
5:00 AM–7:00 AM,
Wednesday, March 22, 2023
Room: Virtual Room 5
Sponsoring
Unit:
DQI
Chair: Benjamin Lienhard, Massachusetts Institute of Technology
Abstract: UU05.00002 : Robust optimal control for a systematic error in the control amplitude*
5:12 AM–5:24 AM
Presenter:
Max Cykiert
(University of Surrey)
Authors:
Max Cykiert
(University of Surrey)
Eran Ginossar
(University of Surrey)
Collaboration:
Theory and com
tioning of quantum computers. In this work we demonstrate, theoretically and experimentally, that
pulses designed by optimisation can be used to counteract the loss of fidelity due to a characterisa-
tion error of the coupling of the control to the qubit. We analyse the control landscape obtained by
optimal control and find it to be dependent on the error and that the optimisation is less likely to
converge at a slow gate-time. Robust controls are found for different error rates and are compared
to incoherent loss of fidelity mechanism due to a finite relaxation rate. The controls are tested on
the IBMQ’s qubit and found to demonstrate resilience against significant ∼ 10% errors.
*UKRI
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