708 citations
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17 papers · 1 filter
Planar chiral metasurfaces with maximal tunable chiroptical response driven by bound states in the continuum
Tan Shi, Zi-Lan Deng, Guangzhou Geng +8
Optical metasurfaces with high-Q chiral resonances can boost light-matter interaction for various applications of chiral response for ultrathin, active, and nonlinear metadevices.…
Photonics of Time-Varying Media
Emanuele Galiffi, Romain Tirole, Shixiong Yin +7
Time-varying media have recently emerged as a new paradigm for wave manipulation, thanks to thesynergy between the discovery of novel, highly nonlinear materials, such as epsilon-n…
Encircling exceptional points in a Riemann sphere for efficient asymmetric polarization-locked devices
Aodong Li, Lin Chen
Dynamically encircling exceptional points (EPs) in two-dimensional Hamiltonian parameter space has enabled intriguing chiral dynamics in which the final state of the system depends…
An Archimedes' Screw for Light
Emanuele Galiffi, Paloma A. Huidobro, J. B. Pendry
An Archimedes' Screw captures water, feeding energy into it by lifting it to a higher level. We introduce the first instance of an optical Archimedes' Screw, and demonstrate how th…
Perfect diffraction metagratings supporting bound states in the continuum and exceptional points
Zi-Lan Deng, Feng-Jun Li, Huanan Li +2
Resonance coupling in non-Hermitian systems can lead to exotic features, such as bound states in the continuum (BICs) and exceptional points (EPs), which have been widely employed…
Design of High-Q Passband Filters Implemented Through Multipolar All-Dielectric Metasurfaces
Alessio Monti, Andrea Alù, Alessandro Toscano +1
We propose a novel class of ultrathin high Q passband filters designed by properly combining different multipolar resonances sustained by an all dielectric metasurface. A rigorous…