Cited by 279Quantum Computing Algorithms and ArchitectureQuantum many-body systemsQuantum Information and Cryptography

The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.

Obstacles to Variational Quantum Optimization from Symmetry Protection

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Bravyi, Sergey, Kliesch, Alexander, Koenig, Robert, Tang, Eugene·2020·Physical Review Letters

Abstract

The quantum approximate optimization algorithm (QAOA) employs variational states generated by a parameterized quantum circuit to maximize the expected value of a Hamiltonian encoding a classical cost function. Whether or not the QAOA can outperform classical algorithms in some tasks is an actively debated question. Our work exposes fundamental limitations of the QAOA resulting from the symmetry and the locality of variational states. A surprising consequence of our results is that the classical Goemans-Williamson algorithm outperforms the QAOA for certain instances of MaxCut, at any constant level. To overcome these limitations, we propose a nonlocal version of the QAOA and give numerical evidence that it significantly outperforms the standard QAOA for frustrated Ising models.

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Research works printed but not linked: 3

  1. R. Shaydulin, 2019, Evaluating quantum approximate optimization algorithm: A case study, in 2019 Tenth International Green and Sustainable Computing Conference (IGSC)
  2. A. W. Marcus, 2015, Proceedings of the 2015 IEEE 56th Annual Symposium on Foundations of Computer Science
  3. L. Eldar, 2017, Proceedings of the 2017 IEEE 58th Annual Symposium on Foundations of Computer Science (FOCS)

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Metadata

Authors
Bravyi, S., Kliesch, A., Koenig, R., & Tang, E.
Affiliations
  • IBM (United States) (US)
  • Technical University of Munich (DE)
  • California Institute of Technology (US)
Venue
Physical Review Letters
Published
2020-12-24
Volume
125
Issue
26
Pages
260505-260505
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2980835754
Cited by
278
References
22
Citations by year
2026: 23 · 2025: 50 · 2024: 52 · 2023: 71 · 2022: 42 · 2021: 31 · 2020: 8
FWCI
14.93
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Army Research Office (W911NF-20-1-0014)
  • Natural Sciences and Engineering Research Council of Canada
  • National Science Foundation (PHY-1733907)
  • Deutsche Forschungsgemeinschaft
  • IBM Research Frontiers Institute
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Information and Cryptography
Keywords
quantum approximate optimization algorithm, variational quantum optimization, symmetry protection, Goemans-Williamson algorithm, MaxCut, frustrated Ising model

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