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arXiv · 2404.02658

Demonstration of weighted graph optimization on a Rydberg atom array using local light-shifts

A. G. de Oliveira·E. Diamond-Hitchcock·D. M. Walker·M. T. Wells-Pestell·G. Pelegrí·C. J. Picken·G. P. A. Malcolm·A. J. Daley·J. Bass·J. D. Pritchard
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Abstract

Neutral atom arrays have emerged as a versatile platform towards scalable quantum computation and optimization. In this paper we present demonstrations of solving maximum weighted independent set problems on a Rydberg atom array using annealing with local light-shifts. We verify the ability to prepare weighted graphs in 1D and 2D arrays, including embedding a five vertex non-unit disk graph using nine physical qubits and demonstration of a simple crossing gadget. We find common annealing ramps leading to preparation of the target ground state robustly over a substantial range of different graph weightings. This work provides a route to exploring large-scale optimization of non-planar weighted graphs relevant for solving relevant real-world problems.

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A. G. de Oliveira, E. Diamond-Hitchcock, D. M. Walker, M. T. Wells-Pestell, G. Pelegrí, C. J. Picken, G. P. A. Malcolm, A. J. Daley, J. Bass, J. D. Pritchard. 2024-04-03. Demonstration of weighted graph optimization on a Rydberg atom array using local light-shifts. https://doi.org/10.1103/prxquantum.6.010301

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