Document Type

Article

Publication Date

2025

DOI

10.1103/PhysRevD.111.034506

Publication Title

Physical Review D

Volume

111

Issue

3

Pages

034506 (1-18)

Abstract

We explore the application of quantum optimal control (QOC) techniques to state preparation of lattice field theories on quantum computers. As a first example, we focus on the Schwinger model, quantum electrodynamics in 1 + 1 dimensions. We demonstrate that QOC can significantly speed up the ground state preparation compared to gate-based methods, even for models with long-range interactions. Using classical simulations, we explore the dependence on the interqubit coupling strength and the device connectivity, and we study the optimization in the presence of noise. While our simulations indicate potential speedups, the results strongly depend on the device specifications. In addition, we perform exploratory studies on the preparation of thermal states. Our results motivate further studies of QOC techniques in the context of quantum simulations for fundamental physics.

Rights

© 2025 American Physical Society. All rights reserved.

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Original Publication Citation

Araz, J. Y., Bhowmick, S., Grau, M., McEntire, T. J., & Ringer, F. (2025). State preparation of lattice field theories using quantum optimal control. Physical Review D, 111(3), 1-18, Article 034506. https://doi.org/10.1103/PhysRevD.111.034506

ORCID

0000-0001-8721-8042 (Araz), 0000-0002-2684-6923 (Grau), 0000-0002-5939-3510 (Ringer)

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