任意金属纳米结构中两个量子发射器的辐射耦合。

Radiative coupling of two quantum emitters in arbitrary metallic nanostructures.

作者信息

Liu JingFeng, Chen Gengyan, Li Lingyan, Liu Renming, Li Wei, Liu Guanghui, Wu Feng, Chen Yongzhu

机构信息

College of Electronic Engineering (College of Artificial Intelligence), South China Agricultural University, Guangzhou, 510642, China.

School of Optoelectronic Engineering, Guangdong Polytechnic Normal University, Guangzhou, 510665, China.

出版信息

Sci Rep. 2022 Apr 27;12(1):6901. doi: 10.1038/s41598-022-10624-y.

DOI:10.1038/s41598-022-10624-y

PMID:35478199

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9046376/

Abstract

We propose a general formalism beyond Weisskopf-Wigner approximation to efficiently calculate the coupling matrix element, evolution spectrum and population evolution of two quantum emitters in arbitrary metallic nanostructures. We demonstrate this formalism to investigate the radiative coupling and decay dynamics of two quantum emitters embedded in the two hot spots of three silver nano-spheroids. The vacuum Rabi oscillation in population evolution and the anti-crossing behavior in evolution spectrum show strong radiative coupling is realized in this metallic nanostructure despite its strong plasmon damping. Our formalism can serve as a flexible and efficient calculation tool to investigate the distant coherent interaction in a large variety of metallic nanostructures, and may be further developed to handle the cases for multiple quantum emitters and arbitrary dielectric-metallic hybrid nanostructures.

摘要

我们提出了一种超越魏斯科夫-维格纳近似的通用形式体系，以有效计算任意金属纳米结构中两个量子发射体的耦合矩阵元、演化谱和布居演化。我们展示了这种形式体系，用于研究嵌入三个银纳米球两个热点中的两个量子发射体的辐射耦合和衰减动力学。尽管存在强等离子体阻尼，但布居演化中的真空拉比振荡和演化谱中的反交叉行为表明，在这种金属纳米结构中实现了强辐射耦合。我们的形式体系可以作为一种灵活高效的计算工具，用于研究各种金属纳米结构中的远距离相干相互作用，并且可能进一步发展以处理多个量子发射体和任意介电-金属混合纳米结构的情况。