Sodium metals for single emitter strong coupling:Alternative plasmonic candidates beyond noble metals

作     者：Yi Zhang Shuying Chen Yuning Han Xiulai Xu Lin Zhou 

作者机构：National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210008China School of Information and Electronic Engineering(Sussex Artificial Intelligence Institute)Zhejiang Gongshang UniversityHangzhou 310018China Department of Physics&AstronomyUniversity College LondonLondon WC1E 6BTUK State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronicsSchool of PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2024年第67卷第8期

页      面：106-117页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2021YFA1400700) the National Natural Science Foundation of China(Grant Nos.12075205,62375123,and 12022403) 

主　　题：sodium metals plasmonics single quantum emitter strong coupling pseudomode 

摘      要：This work provides a theoretical investigation into the strong coupling between a single quantum emitter(QE)and the surface plasmons of sodium metals in two representative plasmonic systems,i.e.,the semi-infinite metal-dielectric interface and the metal nanoparticles(NPs)of monomer/dimer *** both configurations,sodium metals exhibit distinctly stronger coupling strength and lower optical loss in the optical region than their noble metal counterparts,demonstrating the ideal candidate characteristics for single-molecule-level strong couplings with distinctly facile operation *** results provide new insights into extreme light-matter interactions with potential applications in quantum information,optical sensors,quantum chemistry,etc.