Exceptional points and enhanced nanoscale sensing with a plasmon-exciton hybrid system

被引:0
|
作者
HONG JIANG [1 ]
WEIDONG ZHANG [1 ]
GUOWEI LU [1 ,2 ,3 ]
LULU YE [1 ]
HAI LIN [1 ]
JINGLIN TANG [1 ]
ZHAOHANG XUE [1 ]
ZHENG LI [1 ,2 ,3 ]
HAITAN XU [4 ,5 ]
QIHUANG GONG [1 ,2 ,3 ]
机构
[1] State Key Laboratory for Mesoscopic Physics, Collaborative Innovation Center of Quantum Matter, Nano-optoelectronics Frontier Center of the Ministry of Education, School of Physics, Peking University
[2] School of Physical Sciences, University of Science and Technology of China
[3] Peking University Yangtze Delta Institute of Optoelectronics
[4] Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology
[5] Collaborative Innovation Center of Extreme Optics, Shanxi University
基金
中国国家自然科学基金;
关键词
D O I
暂无
中图分类号
O53 [等离子体物理学]; TP212 [发送器(变换器)、传感器];
学科分类号
070204 ; 080202 ;
摘要
Singularities in the spectra of open systems, known as exceptional points(EPs), have been shown to exhibit nontrivial topological properties and enhanced sensitivities. Here, we propose a novel approach to realize the EPs in a plasmon-exciton hybrid system and explore their applications in enhanced nanoscale sensing technology.We consider a plasmon-exciton system composed of a gold nanorod and a monolayer WSe. By controlling the geometric parameters of the nano-hybrid system, we obtain simultaneous coalescence of the resonance frequencies and loss rates of the hybrid system, which is a unique feature of EPs. Numerical simulations show its application in enhanced nanoscale sensing for environmental refractive indices. Our work opens the way to a new class of sensors based on EP-enhanced sensing, with intrinsic nanoscale sensitivity due to the sub-diffractionlimit size of the plasmon-exciton nano-hybrid system.
引用
收藏
页码:557 / 563
页数:7
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