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arXiv:1206.2422 · Physical Review A

Strongly enhanced light-matter interaction in a hybrid photonic-plasmonic resonator

Yun‐Feng Xiao, Yong‐Chun Liu, Bei‐Bei Li, You-Ling Chen, Yan Li, Qihuang Gong

Published Mar 27, 2012• 171 citations
arXivHTMLPDF

Abstract

We propose a hybrid photonic-plasmonic resonant structure which consists of a metal nanoparticle (MNP) and a whispering-gallery-mode (WGM) microcavity. It is found that the hybrid mode enables a strong interaction between the light and matter, and the single-atom cooperativity is enhanced by more than two orders of magnitude compared to that in a bare WGM microcavity. This improvement originates from two aspects: the MNP offers a highly enhanced local field in the vicinity of an emitter, and, interestingly, the high-$Q$ property of WGMs can be maintained in the presence of the MNP. Thus the present system has advantages over a single microcavity or a single MNP, and holds potential in quantum optics, nonlinear optics, and highly sensitive biosensing.

DOI
10.1103/physreva.85.031805

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