In this work, we leverage plasmonic absorption losses (or imaginary index) as a design parameter for non-Hermitian, passive parity-time symmetric metasurfaces. We show that coupled plasmonic-photonic resonator pairs, possessing a large asymmetry in absorptive losses but balanced radiative losses, ...
Non-Hermitian metasurface with non-trivial topology. Nanophotonics 11, 1159–1165 (2022). CAS Google Scholar Song, Q., Odeh, M., Zúñiga-Pérez, J., Kanté, B. & Genevet, P. Plasmonic topological metasurface by encircling an exceptional point. Science 373, 1133–1137 (2021). CAS ...
Exceptional points (EPs), also known as non-Hermitian degeneracies, have been observed in parity-time symmetric metasurfaces as parity-time symmetry breaking points. However, the parity-time symmetry condition puts constraints on the metasurface parameter space, excluding the full examination of unique...
(a) Non-Hermitian metasurface geometry [202]. (b) Non-Hermitian control of light propagation in a topological microring lattice. Topological edge states can be dynamically reconfigured to steer light along any boundaries defined by the arbitrarily patterned pump beam [203]. (c) Experimental scheme...
Explorations of symmetry and topology have led to important breakthroughs in quantum optics, but much richer behaviors arise from the non-Hermitian nature of light-matter interactions. A high-reflectivity, non-Hermitian optical mirror can be realized by
Efficient Nonreciprocal Frequency Conversion with Space-Time Josephson Junction Metasurfaces This paper presents a novel design of a reflective metasurface featuring cascaded space-time-varying Josephson junctions, with the nonlinear inductance of ... S Taravati - European Microwave Conference 被引量: 0...
Fleury, A. Alù, Unidirectional cloaking based on metasurfaces with balanced loss and gain. Phys. Rev. Appl. 4(1), 014005 (2015) Google Scholar M. Principe, G. Castaldi, M. Consales, A. Cusano, V. Galdi, Supersymmetry-inspired non-hermitian optical couplers. Sci. Rep. 5, 8568 (...
Nearly one century after the birth of quantum mechanics, parity–time symmetry is revolutionizing and extending quantum theories to include a unique family of non-Hermitian Hamiltonians. While conceptually striking, experimental demonstration of parity–time symmetry remains unexplored in quantum electronic ...
Alu, “Negative refraction and planar focusing based on parity-time symmetric metasurfaces,” Phys. Rev. Lett., vol. 113, 2014, Art no. 023903, https://doi.org/10.1103/physrevlett.113.023903.Search in Google Scholar Supplementary material The online version of this article offers supplementary ...
non-Hermitian metasurfacesWe proposed and designed a non-Hermitian metasurface mirror consisting of two-layers acoustic labyrinthine metamaterials with a full phase control and inherent loss. It yields strongly asymmetric acoustic retroflection (>35 dB) for two opposite incident angles: free retro...