Coupling a single solid state quantum emitter to an array of resonant plasmonic antennas

TL;DR

This paper explores how a single quantum dot interacts with a plasmonic meta-surface, revealing enhanced emission effects and differences from single nanoantenna interactions, with potential applications in optical engineering.

Contribution

It demonstrates the coupling effects between a quantum emitter and a plasmonic array, highlighting the influence of spectral properties and emitter positioning on emission enhancement.

Findings

Resonant enhancement observed in emitter-array coupling

Distinct behavior compared to single nanoantenna interactions

Influence of nanoantenna spectral properties and emitter position

Abstract

Plasmon resonant arrays or meta-surfaces shape both the incoming optical field and the local density of states for emission processes. They provide large regions of enhanced emission from emitters and greater design flexibility than single nanoantennas. This makes them of great interest for engineering optical absorption and emission. Here we study the coupling of a single quantum emitter, a self-assembled semiconductor quantum dot, to a plasmonic meta-surface. We investigate the influence of the spectral properties of the nanoantennas and the position of the emitter in the unit cell of the structure. We observe a resonant enhancement due to emitter-array coupling in the far-field regime and find a clear difference from the interaction of an emitter with a single antenna.