Optical analogy to electronic quantum corrals

We describe full multiple-scattering calculations of localized surface phot onic states set up by lithographically designed nanostructures made of a fi nite number of dielectric pads deposited on a planar surface. The method is based on a numerical solution of the dyadic Dyson's equation. When the pad s are arranged to form a closed circle, we find field patterns that look li ke the electronic charge density recently observed above quantum corrals. W e propose two experimental techniques that could be used to observe these e lectromagnetic modes in direct space.