78 citations · 96 across the 2 of their papers we have counts for
3 papers
Magnified imaging based on non-Hermitian nonlocal cylindrical metasurfaces
Silvio Savoia, Constantinos A. Valagiannopoulos, Francesco Monticone +3
We show that a cylindrical lensing system composed of two metasurfaces with suitably tailored non-Hermitian (i.e., with distributed gain and loss) and nonlocal (i.e., spatially dis…
Non-Hermiticity-Induced Wave Confinement and Guiding in Loss-Gain-Loss Three-Layer Systems
Silvio Savoia, Giuseppe Castaldi, Vincenzo Galdi
Following up on previous studies on parity-time-symmetric gain-loss bi-layers, and inspired by formal analogies with plasmonic waveguides, we study non-Hermiticity-induced wave con…
-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…