Open AccessStrong coupling effects between a meta-atom and MIM nanocavity
Author(s) -
San Chen,
Jianqiang Liu,
Hong-Yang Lu,
Qianjin Wang,
Yanyan Zhu
Publication year - 2012
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4757120
Subject(s) - quadrupole , multipole expansion , atomic physics , dipole , atom (system on chip) , coupling (piping) , physics , oscillation (cell signaling) , molecular physics , chemistry , materials science , quantum mechanics , computer science , metallurgy , biochemistry , embedded system
In this paper, we investigate the strong coupling effects between a meta-atom and a metal-insulator-metal (MIM) nanocavity. By changing the meta-atom sizes, we achieve the meta-atomic electric dipole, quadrupole or multipole interaction with the plasmonic nanocavity, in which characteristic anticrossing behaviors demonstrate the occurrence of the strong coupling. The various interactions present obviously different splitting values and behaviors of dependence on the meta-atomic position. The largest Rabi-type splittings, about 360.0 meV and 306.1 meV, have been obtained for electric dipole and quadrupole interaction, respectively. We attribute the large splitting to the highly-confined cavity mode and the large transition dipole of the meta-atom. Also the Rabi-type oscillation in time domain is given