Studying the phase diagram of the three-flavor Schwinger model in the presence of a chemical potential with measurement- and gate-based quantum computing

Schuster S, Kühn S, Funcke L, Hartung T, Pleinert MO, von Zanthier J, Jansen K (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Physical Review D American Physical Society

Book Volume: 109

Article Number: 114508

Journal Issue: 11

DOI: 10.1103/PhysRevD.109.114508

Abstract

We propose an ansatz quantum circuit for the variational quantum eigensolver (VQE), suitable for exploring the phase structure of the multiflavor Schwinger model in the presence of a chemical potential. Our ansatz is capable of incorporating relevant model symmetries via constrains on the parameters, and can be implemented on circuit-based as well as measurement-based quantum devices. We show via classical simulation of the VQE that our ansatz is able to capture the phase structure of the model, and can approximate the ground state to a high level of accuracy. Moreover, we perform proof-of-principle simulations on superconducting, gate-based quantum hardware. Our results show that our approach is suitable for current gate-based quantum devices, and can be readily implemented on measurement-based quantum devices once available.

Authors with CRIS profile

Stephan Schuster Quantum Optics & Quantum Information Marc-Oliver Pleinert Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa Joachim von Zanthier Quantum Optics & Quantum Information

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Deutsches Elektronen-Synchrotron DESY DE Germany (DE) Rheinische Friedrich-Wilhelms-Universität Bonn DE Germany (DE) University of London GB United Kingdom (GB)

How to cite

APA:

Schuster, S., Kühn, S., Funcke, L., Hartung, T., Pleinert, M.-O., von Zanthier, J., & Jansen, K. (2024). Studying the phase diagram of the three-flavor Schwinger model in the presence of a chemical potential with measurement- and gate-based quantum computing. Physical Review D, 109(11). https://doi.org/10.1103/PhysRevD.109.114508

MLA:

Schuster, Stephan, et al. "Studying the phase diagram of the three-flavor Schwinger model in the presence of a chemical potential with measurement- and gate-based quantum computing." Physical Review D 109.11 (2024).

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