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In the last two decades, the ubiquitous effect of dissipation has proven toentail astonishing non-Hermitian features, rather than just being aninescapable nuisance. As an alternative route to non-Hermiticity, we tailor theanisotropy of a lattice, which constitutes an, up to now, barely exploiteddegree of freedom. In this case, the appearance of an interface dramaticallyalters the entire eigenmode spectrum, leading to the exponential localizationof all modes at the interface, which goes beyond the expectations for Hermitiansystems. This effect is dubbed "non-Hermitian skin effect". We experimentallydemonstrate it by studying the propagation of light in a large scale photonicmesh lattice. For arbitrary excitations, we find that light is alwaystransported to the interface, realizing a highly efficient funnel for light.

Efficient Light Funneling based on the non-Hermitian Skin Effect