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Equivalence of reflection paths of light and Feynman paths in stacked metasurfaces

: Sperrhake, J.; Falkner, M.; Fasold, S.; Kaiser, T.; Pertsch, T.


Physical Review. B 102 (2020), No.24, Art. 245108
ISSN: 0163-1829
ISSN: 1098-0121
ISSN: 0556-2805
ISSN: 2469-9950
Journal Article
Fraunhofer IOF ()
anisotropic layers; electron transport; Feynman paths; isotropic layers; analytic descriptions

We show the existence of virtual polarization states during the interaction of modes in metasurface stacks. In support of our findings we experimentally realize a metasurface stack, consisting of an isotropic layer of nanopatches and an anisotropic layer of nanowires. Utilizing an analogy to the interaction of electrons at junctions in mesoscopic electron transport via Feynman paths, we present a semi-analytic description of the modal interaction inside this stack. We then derive a series of all possible reflection paths light can take inside the metasurface stack.