Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session C08: Control and Measurement of Mesoscopic Systems
2:00 PM–4:00 PM,
Tuesday, June 4, 2024
Room: 203B
Chair: Grace Liang
Abstract: C08.00001 : Graph optimisation on neutral atom array with local addressing*
2:00 PM–2:12 PM
Presenter:
Daniel M Walker
(University of Strathclyde)
Authors:
Andre de Oliveira
(University of Strathclyde)
Elliot Diamond-Hitchcock
(University of Strathclyde)
Maximillian t Wells-pestell
(University of Strathclyde)
Gerard Pelegrí
(University of Strathclyde)
Daniel M Walker
(University of Strathclyde)
JONATHAN BASS
(University of Strathclyde)
Jonathan D Pritchard
(University of Strathclyde)
Collaboration:
SQuAre Team
To extend this approach to explore optimisation of a wider class of problems including weighted graphs and quadratic unconstrained binary optimisation (QuBO), it is necessary to introduce locally addressed light-shifts to enable weighting of nodes during the optimisation process, enabling problems to be encoded with at worst a quadratic resource overhead.
In this talk we present work to develop a large-scale system for quantum computing and annealing, and show preliminary results highlighting our ability to implement small-scale demonstrations of weighted graph optimisation using programmable local light-shifts across an atom array. We introduce a hybrid annealing process combining global addressing with ramped light shifts, and outline prospects for scaling this approach to larger graph problems as a potential pathway to quantum utility.
*This work is supported by the EPSRC Prosperity Partnership SQuAre (Grant No. EP/T005386/1) with funding from M Squared Lasers Ltd.
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