Regensburg 2025 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 6: Materials and Devices for Quantum Technology I
HL 6.13: Vortrag
Montag, 17. März 2025, 18:15–18:30, H13
Electric-circuit realization of the Floquet-SSH-Model — •Christine Barko2, Alexander Stegmaier1, Alexander Fritzsche1, Riccardo Sorbello1, Martin Greiter1, Hauke Brand2, Maximilian Hofer2, Udo Schwingenschlögl3, Roderich Moessner4,5, Ching Hua Lee6, Alexander Szameit5,7, Andrea Alù8,9, Tobias Kießling2,5, and Ronny Thomale1,5 — 1Physikalisches Inst. (TP1), Universität Würzburg, Würzburg, Germany — 2Physikalisches Inst. (EP3), Universität Würzburg, Würzburg, Germany — 3Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia — 4Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, Dresden, Germany — 5Würzburg-Dresden Cluster of Excellence ct.qmat, Würzburg, Germany — 6Department of Physics, National University of Singapore, Singapore — 7Institute of Physics, University of Rostock, Rostock, Germany — 8Photonics Initiative, Advanced Science Research Center, City University of New York, New York, USA — 9Physics Program, Graduate Center, City University of New York, New York, USA
We build Floquet-driven capactive circuit networks to realize topological states of matter in the frequency domain. We find the Floquet circuit network equations of motion to reveal a potential barrier which effectively acts as a boundary in frequency space. By implementing a Su-Shrieffer-Heeger Floquet lattice model and measuring the associated circuit Laplacian and characteristic resonances, we demonstrate how topological edge modes can nucleate at such a frequency boundary.
Keywords: Topoelectric circuits; Floquet Systems; Floquet Su-Shrieffer-Heeger model