Coupling of atomic quadrupole transitions with resonant surface plasmons
Atomic Physics
2019-06-04 v2
Abstract
We report on the coupling of an electric quadrupole transition in atom with plasmonic excitation in a nanostructured metallic metamaterial. The quadrupole transition at 685 nm in the gas of Cesium atoms is optically pumped, while the induced ground state population depletion is probed with light tuned on the strong electric dipole transition at 852 nm. We use selective reflection to resolve the Doppler-free hyperfine structure of Cesium atoms. We observed a strong modification of the reflection spectra at the presence of metamaterial and discuss the role of the spatial variation of the surface plasmon polariton on the quadrupole coupling.
Cite
@article{arxiv.1812.01827,
title = {Coupling of atomic quadrupole transitions with resonant surface plasmons},
author = {Eng Aik Chan and Syed Abdullah Aljunid and Giorgio Adamo and Nikolay I. Zheludev and Martial Ducloy and David Wilkowski},
journal= {arXiv preprint arXiv:1812.01827},
year = {2019}
}
Comments
6 pages, 5 figures