中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(8) ：106-117.DOI:10.1007/s11433-024-2407-6

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

Yi Zhang Shuying Chen Yuning Han Xiulai Xu Lin Zhou
中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(8) ：106-117.DOI:10.1007/s11433-024-2407-6
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Sodium metals for single emitter strong coupling:Alternative plasmonic candidates beyond noble metals

Yi Zhang 1Shuying Chen 2Yuning Han 3Xiulai Xu 4Lin Zhou2
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作者信息

  • 1. National Laboratory ofSolid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210008,China;School of Information and Electronic Engineering(Sussex Artificial Intelligence Institute),Zhejiang Gongshang University,Hangzhou 310018,China
  • 2. National Laboratory ofSolid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210008,China
  • 3. National Laboratory ofSolid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210008,China;Department of Physics & Astronomy,University College London,London WC1E 6BT,UK
  • 4. State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China
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Abstract

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 configuration.In 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 conditions.Our results provide new insights into extreme light-matter interactions with potential applications in quantum information,optical sensors,quantum chemistry,etc.

Key words

sodium metals/plasmonics/single quantum emitter strong coupling/pseudomode

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基金项目

National Key Research and Development Program of China(2021YFA1400700)

National Natural Science Foundation of China(12075205)

National Natural Science Foundation of China(62375123)

National Natural Science Foundation of China(12022403)

出版年

2024
中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
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