论文标题
基于非铁皮皮肤效应的有效光漏斗
Efficient Light Funneling based on the non-Hermitian Skin Effect
论文作者
论文摘要
在过去的二十年中，耗散的无处不在效果已被证明具有惊人的非弱者特征，而不仅仅是不可避免的滋扰。作为非热性的替代途径，我们定制了一个晶格的各向异性，该晶格构成了迄今为止几乎没有利用的自由度。在这种情况下，界面的外观会大大改变整个本本特征光谱，从而导致界面上所有模式的指数定位，这超出了对Hermitian系统的期望。这种作用被称为“非铁皮皮肤效应”。我们通过研究大型光子网格晶格中的光的传播来实验证明这一点。对于任意激发，我们发现光总是传输到界面，实现了高效的光线漏斗。
In the last two decades, the ubiquitous effect of dissipation has proven to entail astonishing non-Hermitian features, rather than just being an inescapable nuisance. As an alternative route to non-Hermiticity, we tailor the anisotropy of a lattice, which constitutes an, up to now, barely exploited degree of freedom. In this case, the appearance of an interface dramatically alters the entire eigenmode spectrum, leading to the exponential localization of all modes at the interface, which goes beyond the expectations for Hermitian systems. This effect is dubbed "non-Hermitian skin effect". We experimentally demonstrate it by studying the propagation of light in a large scale photonic mesh lattice. For arbitrary excitations, we find that light is always transported to the interface, realizing a highly efficient funnel for light.
