Instance Independence of Single Layer Quantum Approximate Optimization Algorithm on Mixed-Spin Models at Infinite Size

Jahan Claes1,2 and Wim van Dam1,3,4

1QC Ware Corporation, Palo Alto, CA USA
2Department of Physics and Institute for Condensed Matter Theory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
3Department of Computer Science, University of California, Santa Barbara, CA USA
4Department of Physics, University of California, Santa Barbara, CA USA

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Abstract

This paper studies the application of the Quantum Approximate Optimization Algorithm (QAOA) to spin-glass models with random multi-body couplings in the limit of a large number of spins. We show that for such mixed-spin models the performance of depth $1$ QAOA is independent of the specific instance in the limit of infinite sized systems and we give an explicit formula for the expected performance. We also give explicit expressions for the higher moments of the expected energy, thereby proving that the expected performance of QAOA concentrates.

► BibTeX data

► References

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Cited by

[1] V. Akshay, D. Rabinovich, E. Campos, and J. Biamonte, "Parameter concentrations in quantum approximate optimization", Physical Review A 104 1, L010401 (2021).

[2] E. Campos, D. Rabinovich, V. Akshay, and J. Biamonte, "Training Saturation in Layerwise Quantum Approximate Optimisation", arXiv:2106.13814.

[3] Jordi R. Weggemans, Alexander Urech, Alexander Rausch, Robert Spreeuw, Richard Boucherie, Florian Schreck, Kareljan Schoutens, Jiří Minář, and Florian Speelman, "Solving correlation clustering with QAOA and a Rydberg qudit system: a full-stack approach", arXiv:2106.11672.

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