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Combinatorial optimization through variational quantum power method

Open access
Daskin, Ammar·2021·Quantum Information Processing

Abstract

The power method (or iteration) is a well-known classical technique that can be used to find the dominant eigenpair of a matrix. Here, we present a variational quantum circuit method for the power iteration, which can be used to find the eigenpairs of unitary matrices and so their associated Hamiltonians. We discuss how to apply the circuit to combinatorial optimization problems formulated as a quadratic unconstrained binary optimization and discuss its complexity. In addition, we run numerical simulations for random problem instances with up to 21 parameters and observe that the method can generate solutions to the optimization problems with only a few number of iterations and the growth in the number of iterations is polynomial in the number of parameters. Therefore, the circuit can be simulated on the near-term quantum computers with ease.

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Research works printed but not linked: 2

  1. Cramér, H.: Mathematical Methods of Statistics, vol. 43. Princeton University Press, Princeton (1999)
  2. Farhi, E., Goldstone, J., Gutmann, S., Sipser, M. (2000). Quantum computation by adiabatic evolution. http://arxiv.org/abs/quant-ph/0001106 · arXiv

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Metadata

Authors
Daskin, A.
Affiliations
Istanbul Medeniyet University (TR)
Corresponding author
Daskin, Ammar
Venue
Quantum Information Processing
Published
2021-10
Volume
20
Issue
10
ISSN
  • 1570-0755 (ISSN-L)
  • 1573-1332
OpenAlex
W3038877908
Cited by
4
References
11
Citations by year
2026: 1 · 2024: 2 · 2023: 1
FWCI
0.27
Type
journal article
Language
en
Open access
Licence
Locations
  • Quantum Information Processing (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
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
variational quantum circuits, power iteration, unitary matrices, QUBO, combinatorial optimization, quantum circuit complexity, near-term quantum devices

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Daskin, A. (2021). Combinatorial optimization through variational quantum power method. Quantum Information Processing. https://doi.org/10.1007/s11128-021-03283-x

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