Scattering properties of collective dipolar systems

TL;DR

This paper develops a theoretical framework to analyze how ensembles of dipoles scatter light collectively, accounting for multiple scattering effects, and explores their optical properties relevant to nanophotonics and atomic clocks.

Contribution

It introduces a formalism for studying collective scattering and absorption in dipolar systems without specific illumination conditions, including radiative corrections from mutual interactions.

Findings

Derived collective absorption modes for nanoparticle ensembles

Quantified radiative corrections due to dipole interactions

Provided insights into collective optical behavior in nanophotonics

Abstract

We present a theoretical treatment of light scattering by an ensemble of N dipoles, taking into account recurrent multiple scattering. We study the intrinsic optical properties of collective dipolar systems without specifying a particular illumination condition. We apply this formalism to study the collective absorption modes for an ensemble of small nanoparticles and then to derive collective radiative corrections due to mutual interactions in dipolar ensembles, a topic of major importance in the development of collective nanophotonic systems or atomic networks used as optical clocks.