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arXiv 2603.26175physics.optics
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非厄米特异常标度工程

Non-Hermitian Anomalous Scaling Engineering

Southeast University(东南大学);Politecnico di Milano(米兰理工大学);IFISC (UIB-CSIC), Instituto de Fisica Interdisciplinar y Sistemas Complejos(IFISC(UIB-CSIC)交叉物理与复杂系统研究所)

Shulin Wang, Jiawei He, Zhiyuan Yang, Stefano Longhi, Peng Xue

AI总结:

研究通过实验揭示非厄米特系统中的异常标度现象,并展示其在时域光子晶格中的主动控制,发现非厄米特拓扑相变及Kerr相互作用对非厄米特非线性物理的影响。

摘要:

非厄米特系统表现出异常标度,这是非厄米特皮肤效应(NHSE)导致的对传统体律的偏离。本文通过实验揭示了这一标度现象,并在时域光子晶格中展示了其主动控制。通过跟踪系统尺寸变化时所有本征态的实时演化,直接观察到标度驱动的谱重塑和本征态局域化现象,揭示了在厄米特或无NHSE晶格中不存在的现象。在Su-Schrieffer-Heeger晶格中,仅标度即可触发非厄米特拓扑相变,边缘模式保持保护。关键的是,Kerr相互作用开拓了非线性非厄米特物理的前沿:弱非线性会加速或减缓异常标度,而强非线性则完全抑制它。这些结果建立了首个实验平台用于线性和非线性异常标度工程,为紧凑型非厄米特设备和非线性及多体非厄米特现象的探索铺平了道路。

英文摘要:

Non-Hermitian systems exhibit anomalous scaling, a striking departure from conventional bulk laws, rooted in the non-Hermitian skin effect (NHSE). Here, we experimentally uncover this scaling and demonstrate its active control in a temporal photonic lattice. By tracking the real-time evolution of all eigenstates as system size varies, we directly observe scaling-driven spectral reshaping and eigenstate localization, revealing phenomena absent in Hermitian or NHSE-free lattices. In a Su-Schrieffer-Heeger lattice, scaling alone can trigger a non-Hermitian topological phase transition, with edge modes remaining protected. Crucially, Kerr interactions open the frontier of nonlinear non-Hermitian physics: weak nonlinearity accelerates or decelerates anomalous scaling, while strong nonlinearity suppresses it entirely. These results establish the first experimental platform for linear and nonlinear anomalous scaling engineering, paving the way for compact non-Hermitian devices and exploration of nonlinear and many-body non-Hermitian phenomena.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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