Bonn 2025 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 15: Quantum Computing Implementations (joint session QI/Q)
QI 15.2: Vortrag
Dienstag, 11. März 2025, 14:15–14:30, HS II
High Energy Quantum Simulation on a Trapped-Ion Quantum Processor — •Christian Melzer1, Stephan Schuster2, Diego Alberto Olvera Millán1, Janine Hilder1, Ulrich Poschinger1, Karl Jansen3, and Ferdinand Schmidt-Kaler1 — 1QUANTUM, Institut für Physik, Johannes Gutenberg-Universität Mainz — 2Quantum Optics and Quantum Information Group, Friedrich-Alexander-Universität Erlangen-Nürnberg — 3Center for Quantum Technology and Applications, DESY Zeuthen
Currently, quantum processors are noisy and only exhibit few qubits. Still, there are executable applications that show potential for future advantages. We investigate the multi-flavor Schwinger model with non-zero chemical potential. This model stems from the field of high energy physics [1] and describes a phase transition in quantum electrodynamics in one space and one time dimension. For classical computing, this fermionic simulation becomes intractable even for small system sizes due to the notorious sign problem. Using our shuttling-based trapped-ion quantum processor [2], we solve instances of this problem by a variational approach (VQE). Thereby, we find the lowest energy eigenstate of the system and determine the phase transition.
[1] Schuster et al., Phys. Rev. D 109, 114508 (2024)
[2] Hilder et al., Phys. Rev. X 12, 011032 (2022)
Keywords: trapped-ion quantum computing; Schwinger model; non-zero matter density; variational quantum eigensolver