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Gradient Nonlinear Pancharatnam-Berry Metasurfaces
Mykhailo Tymchenko, J. Sebastiàn Gomez-Diaz, Jongwon Lee +3
We apply the Pancharatnam-Berry phase approach to plasmonic metasurfaces loaded by highly nonlinear multi-quantum well substrates, establishing a platform to control the nonlinear…
Aberration-Free Imaging Based on Parity-Time Symmetric Nonlocal Metasurfaces
Francesco Monticone, Constantinos A. Valagiannopoulos, Andrea Alu
Lens design for focusing and imaging has been optimized through centuries of developments; however, conventional lenses, even in their most ideal realizations, still suffer from fu…
Giant Photoresponsivity of Mid-Infrared Hyperbolic Metamaterials in the Quantum Regime
Pai-Yen Chen, Mehdi Hajizadegan, Maryam Sakhdari +1
We explore broadband, wide-angle mid-infrared rectification based on nanopatterned hyperbolic metamaterials (HMM), composed of two dissimilar metals separated by a sub-nanometer tu…
-Symmetry-Induced Wave Confinement and Guiding in Epsilon-Near-Zero Metamaterials
Silvio Savoia, Giuseppe Castaldi, Vincenzo Galdi +2
Inspired by the parity-time symmetry concept, we show that a judicious spatial modulation of gain and loss in epsilon-near-zero metamaterials can induce the propagation of exponent…