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arXiv · 2203.05503

Real- and Fourier-space observation of the anomalous $\pi$-mode in Floquet engineered plasmonic waveguide arrays

Anna Sidorenko·Zlata Fedorova·Johann Kroha·Stefan Linden
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Abstract

We present a joint experimental and theoretical study of the driven Su-Schrieffer-Heeger model implemented by arrays of evanescently coupled plasmonic waveguides. Floquet theory predicts that this system hosts for suitable driving frequencies a topologically protected edge state that has no counterpart in static systems, the so-called anomalous Floquet topological $\pi$-mode. By using real- and Fourier-space leakage radiation microscopy in combination with edge- and bulk excitation, we unequivocally identify the anomalous Floquet topological $\pi$-mode and study its frequency dependence.

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Anna Sidorenko, Zlata Fedorova, Johann Kroha, Stefan Linden. 2022-03-10. Real- and Fourier-space observation of the anomalous $\pi$-mode in Floquet engineered plasmonic waveguide arrays. https://arxiv.org/abs/2203.05503

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