Observation of bulk Fermi arc and polarization half charge from paired exceptional points

Abstract

The ideas of topology have found tremendous success in closed physical systems, but even richer properties exist in the more general open or dissipative framework. We theoretically propose and experimentally demonstrate a bulk Fermi arc that develops from non-Hermitian radiative losses in an open system of photonic crystal slabs. Moreover, we discover half… (More)
DOI: 10.1126/science.aap9859

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