Pump-probe delay in a Ge-integrated non-Hermitian metasurface achieves ~0.5 ps eigenmode switching and full EP encirclement in ~2 ps with >99% modulation depth and Petermann factor ~10^3.
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physics.optics 2years
2026 2verdicts
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A non-Hermitian multilayer engineered via transfer-matrix method achieves robust broadband unidirectional infrared absorption near an exceptional point, with thermal experiments showing up to 21 C temperature difference between directions.
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Active Control of Topological Exceptional Points in Non-Hermitian Metasurfaces
Pump-probe delay in a Ge-integrated non-Hermitian metasurface achieves ~0.5 ps eigenmode switching and full EP encirclement in ~2 ps with >99% modulation depth and Petermann factor ~10^3.
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Robust Broadband Infrared Unidirectional Absorption Enabled by a Non-Hermitian Multilayer
A non-Hermitian multilayer engineered via transfer-matrix method achieves robust broadband unidirectional infrared absorption near an exceptional point, with thermal experiments showing up to 21 C temperature difference between directions.