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HL: Fachverband Halbleiterphysik

HL 52: Focus: Self-Assembly of Plasmonic Nanostructures (joint session CPP/HL)

HL 52.7: Invited Talk

Friday, March 31, 2023, 11:30–12:00, GÖR 226

Simulating quantum systems with plasmonic waveguide arrays — •Stefan Linden — Physikalisches Institut, Universität Bonn, 53115 Bonn

Coupled waveguides provide a powerful platform to simulate the evolution of quantum mechanical tight-binding systems in a classical wave environment. The basis for this is the mathematical equivalence between the time-dependent Schrödinger equation and the paraxial Helmholtz equation. In this presentation, we report on the observation of the Wannier-Stark ladder and Bloch oscillations in arrays of plasmonic waveguides with a propagation constant gradient acting as an effective external potential. Moreover, we show that Floquet engineering is a powerful method to tailor the topological properties of plasmonic waveguide arrays. In this context, we demonstrate that time-periodic modulation of dissipation can restore transport quantization in fast Thouless pumps and report on the observation of the anomalous Floquet topological π-mode at optical frequencies.