Strongly enhanced light-matter interaction in a hybrid photonic-plasmonic resonator
Strongly enhanced light-matter interaction in a hybrid photonic-plasmonic resonator
复制标题
混合光子-等离子体谐振器中光与物质相互作用的显着增强
DOI：
10.1103/physreva.85.031805
复制
发表时间：
2012-03-27
影响因子：
2.9
通讯作者：
Gong, Qihuang
中科院分区：
文献类型：
--
作者：
Xiao, Yun-Feng;Liu, Yong-Chun;Gong, Qihuang
北京大学物理系介观物理国家重点实验室（日期：2012年6月13日）我们提出了一种由金属纳米粒子（MNP）和回音壁模式（WGM）微腔组成的混合光子-等离子体共振结构。研究发现，混合模式能够实现光与物质之间的强烈相互作用，并且与裸WGM微腔相比，单原子协同性增强了两个数量级以上。这种显着的改进源于两个方面：(1) MNP 在发射器附近提供高度增强的局部场，(2) 令人惊讶的是，WGM 的高 Q 特性可以在 MNP 存在的情况下保持。因此，本系统比单个微腔或单个MNP具有巨大的优势，并且在量子光学、非线性光学和高灵敏生物传感方面具有巨大的潜力。
State Key Lab for Mesoscopic Physics, Department of Physics, Peking University, P. R. China(Dated: June 13, 2012)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 enablesa strong interaction between the light and matter, and the single-atom cooperativity is enhanced bymore than two orders of magnitude compared to that in a bare WGM microcavity. This remarkableimprovement originates from two aspects: (1) the MNP offers a highly enhanced local field in thevicinity of an emitter, and (2), surprisingly, the high-Q property of WGMs can be maintained inthe presence of the MNP. Thus the present system has great advantages over a single microcavityor a single MNP, and holds great potential in quantum optics, nonlinear optics and highly sensitivebiosening.