Plasmonic Control of Radiative Properties of Semiconductor Quantum Dots Coupled to Plasmonic Ring Cavities

Abstract

(Word Style "BD_Abstract").In recent years, a lot of effort has been made to achieve controlled delivery of target particles to the hotspots of plasmonic nano-antennas, in order to probe and/or exploit the extremely large field enhancements produced by such structures. While in many cases such high fields are advantageous, there are instances where they should be avoided. In this work, we consider the implications of using the standard nanoantenna geometries when colloidal quantum dots are employed as target entities. We show that in this case, and for various reasons, dimer antennas are not the optimum choice. Plasmonic Ring Cavities are a better option despite low field enhancements, as they allow collective coupling of many quantum dots in a reproducible and

A generalized Kerker condition for highly directive nanoantennas

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Exciton-plasmon coupling interactions: from principle to applications

“…At the resonance condition, incident photon energy can be efficiently confined into small area by LSP mode, which can also enhance the local EM fields [41]. Strong EM fields can also be monitored under the influence of the properties of light-matter interaction in systems, quantum-confined nanostructures [42,43], and other excitonic systems.…”

Exciton–Plasmon Coupling and Electromagnetically Induced Transparency in Monolayer Semiconductors Hybridized with Ag Nanoparticles

“…Similarly, the spontaneous emission rate ( rad ) is also enhanced due to an increase in local density of optical states, known as the Purcell effect. [1,2] Since radiative and dissipative loss in metal particles also introduces the possibility of emission quenching by dark modes [6] and lossy surface waves, [7] the overall enhancement in quantum yield ( rad  rad  non-rad ) is therefore determined by the competition of radiative and non-radiative ( non-rad ) rates. [1,2] To achieve a large quantum yield enhancement, local field and radiative rate enhancements need to be optimized while minimizing non-radiative loss.…”