Deterministic Sub-wavelength Control of Light Confinement in Nanostructures

TL;DR

This paper introduces a deterministic method called DOPTI for precisely controlling light confinement in plasmonic nanostructures using continuous light flows, enabling tailored near field patterns with high accuracy.

Contribution

The paper presents the first exact inversion-based protocol, DOPTI, for deterministic control of light in complex nanostructures, advancing nanophotonics capabilities.

Findings

High control accuracy demonstrated on complex architectures

Quantitative analysis of control efficiency and precision

Superposition of high order beams achieves desired patterns

Abstract

We propose a novel deterministic protocol, based on continuous light flows, that enables us to control the concentration of light in generic plasmonic nanostructures. Based on an exact inversion of the response tensor of the nanosystem, the so-called Deterministic Optical Inversion (DOPTI) protocol provides a physical solution for the incident field leading to a desired near field pattern, expressed in the form of a coherent superposition of high order beams. We demonstrate the high degree of control achieved on complex plasmonic architectures and quantify its efficiency and accuracy.