Floquet Harper-Hofstadter Butterflies and non-Hermitian phase transition in quasicrystals

Mark Kremer,Sebastian Weidemann,Stefano Longhi,Martin Wimmer,Ulf Peschel,Alexander Szameit

conference on lasers and electro optics（2021）

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摘要

The non-Hermitian Aubry-Andre-Harper model exhibits a non-Hermitian phase transition that coincides with a localization transition. We provide a high-resolution measurement of the Butterfly spectrum and propose experiments to measure those transitions, using a photonic lattice.

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关键词

nonHermitian Aubry-André-Harper model,phase transition,localization transition,Butterfly spectrum,Floquet Harper-Hofstadter butterflies,nonHermitian phase transition,quasicrystals,photonic lattice

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