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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Computing II

HK 46.1: Vortrag

Donnerstag, 13. März 2025, 14:00–14:15, SR 0.01 Erw. Physik

Variational Quantum Eigensolver for (2+1)-Dimensional QED at Finite Density — •Emil Rosanowski¹, Lena Funcke¹, Karl Jansen², Paulo Itaborai², Arianna Crippa², and Stefan Kühn² — ¹Universität Bonn — ²DESY Zeuthen

In this talk, we present an implementation of multiple fermion flavors in both the Kogut-Susskind and Wilson formulations for quantum simulations of (2+1)-dimensional Quantum Electrodynamics (QED). Our first results show a particular type of level crossing with one flavor of fermions at zero density, as expected from analytical Chern number calculations. Moving forward, we explore the multi-flavor system at finite density by including a chemical potential. Finally, we present results from inference runs executed on real quantum hardware.

Keywords: QED; Quantum Computing; VQE; Wilson Fermions