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arXiv · 1206.2422

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
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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 remarkable improvement originates from two aspects: (1) the MNP offers a highly enhanced local field in the vicinity of an emitter, and (2), surprisingly, the high-\textit{Q} property of WGMs can be maintained in the presence of the MNP. Thus the present system has great advantages over a single microcavity or a single MNP, and holds great potential in quantum optics, nonlinear optics and highly sensitive biosening.

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Yun-Feng Xiao, Yong-Chun Liu, Bei-Bei Li, You-Ling Chen, Yan Li, Qihuang Gong. 2012-06-12. Strongly enhanced light-matter interaction in a hybrid photonic-plasmonic resonator. https://doi.org/10.1103/physreva.85.031805

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