北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2022, Vol. 45 ›› Issue (3): 7-12.doi: 10.13190/j.jbupt.2021-257

• 综述 • 上一篇    下一篇

表面等离激元与激子的强耦合作用

梁琨1, 于丽2   

  1. 1. 北京邮电大学 电子工程学院, 北京 100876;
    2. 北京邮电大学 理学院, 北京 100876
  • 收稿日期:2021-11-02 出版日期:2022-06-28 发布日期:2022-06-01
  • 通讯作者: 于丽(1963—),女,教授,邮箱:yuliyuli@bupt.edu.cn。 E-mail:yuliyuli@bupt.edu.cn
  • 作者简介:梁琨(1992—),男,博士后。
  • 基金资助:
    国家自然基金面上项目(12174037)

Strong Coupling Between Surface Plasmons and Excitons

LIANG Kun1, YU Li2   

  1. 1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2021-11-02 Online:2022-06-28 Published:2022-06-01

摘要: 金属纳米结构中高度局域的表面等离激元模式给光与物质的强相互作用带来了新的研究机遇。在特定条件下,二者的相干能量交换速率会超越各自的能量耗散速率,进入强耦合范畴,该过程可形成光子-激子杂化的准粒子。针对近年来飞速发展的量子光学调控,特别是基于表面等离激元体系的强耦合研究展开综述,介绍了如金属纳腔与手性J聚体强耦合,在零失谐点对耦合系统进行精细调控,通过微流技术实现可控的表面等离激元纳腔-少激子强耦合等。在亚波长尺度下研究强耦合系统中的光场调控技术,有助于光电子器件的小型化。强耦合体系在片上集成的量子信息处理、手性光学器件和超灵敏生化传感器等领域有广阔的应用前景。

关键词: 局域表面等离激元, 激子, 手性, 强耦合, 调控

Abstract: The condensed electromagnetic field of localized surface plasmon mode in metallic nanocavities brought new opportunities in studying the strong light-matter interaction. Under certain conditions, the rate of coherent energy exchange between a cavity photon and an electronic transition surpasses its fundamental energy dissipation rates, which is defined as the strong coupling regime. This process may generate a part-light part-matter quasi-particle, which is known as a hybrid polariton. A series of recent works in quantum optics is summarized, particularly on studying the strong coupling phenomenon and its dynamic control in plasmonic systems, such as strong coupling between metallic nanocavities and chiral J-aggregates, fine-tuning of polariton energies near zero-detuned point, and active control of excitons strongly coupled to plasmonic nano-cavities using a microfluidic technique. Exploring the active control of the optical field on a sub-wavelength scale is valuable, which benefits the miniaturization of optoelectronic devices. Strong coupling systems possess wide application prospects, such as quantum information processing and ultra-sensitive biochemical detections.

Key words: localized surface plasmon polaritons, excitons, chirality, strong coupling, active control

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