Enhancement of and interference among higher order multipole transitions in molecules near a plasmonic nanoantenna.

ABSTRACT: Spontaneous emission of quantum emitters can be modified by their optical environment, such as a resonant nanoantenna. This impact is usually evaluated under assumption that each molecular transition is dominated only by one multipolar channel, commonly the electric dipole. In this article, we go beyond the electric dipole approximation and take light-matter coupling through higher-order multipoles into account. We investigate a strong enhancement of the magnetic dipole and electric quadrupole emission channels of a molecule adjacent to a plasmonic nanoantenna. Additionally, we introduce a framework to study interference effects between various transition channels in molecules by rigorous quantum-chemical calculations of their multipolar moments and a consecutive investigation of the trans

SUBMITTER: Rusak E 

PROVIDER: S-EPMC6920377 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature