Scattering-free pulse propagation through invisible non-Hermitian media

Article

关键词: PARITY-TIME SYMMETRY;    OPTICAL ISOLATION;    WAVES;    LOCALIZATION;    PHYSICS;    MODES;    LIGHT;   

DOI  :  10.1103/PhysRevB.99.115402

来源: SCIE

【 摘 要 】

We demonstrate a design principle for unidirectionally invisible non-Hermitian structures that are invisible not only for one specific wavelength but rather for a broad frequency range. Our idea is based on the concept of constant-intensity waves, which can propagate even through highly disordered media without backscattering or intensity variations. In contrast to already existing invisibility studies, our design principle requires neither a specific symmetry (like PT symmetry) nor periodicity and can thus be applied in a much wider context. This generality combined with broadband frequency stability allows a pulse to propagate through a disordered medium as if the medium were entirely uniform.

【 授权许可】

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