Jiang Zengshun, Sun Kewei, Zhao Yang, Dorfman Konstantin
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China.
School of Science, Hangzhou Dianzi University, Hangzhou 310018, China.
Nanophotonics. 2025 May 26;14(13):2345-2354. doi: 10.1515/nanoph-2025-0123. eCollection 2025 Jun.
In the strong light-matter coupling regime, the transmission properties of metasurfaces have a remarkable similarity to those of typical two-level systems. In this work, we explore the absorption spectra of a metasurface coupled to a quantum phonon bath using the time-dependent variational principle and the flexible multi-D2 Davydov trial states. In the weak light-matter coupling regime, phonon coupling has minimal impact on system dissipation. However, in the strong coupling regime, it significantly influences dissipation dynamics. Additionally, a phonon bath with a selected number of strongly coupled modes near the phonon center line substantially narrows the absorption spectrum linewidth by controlling dissipation through a few phonon channels. These findings demonstrate the critical role of the phonon bath in shaping metasurface transmission properties, offering a promising approach for the precise engineering of metasurfaces.
在强光-物质耦合 regime 中，超表面的传输特性与典型的二能级系统具有显著的相似性。在这项工作中，我们使用含时变分原理和灵活的多-D2 达维多夫试探态来探索与量子声子浴耦合的超表面的吸收光谱。在弱光-物质耦合 regime 中，声子耦合对系统耗散的影响最小。然而，在强耦合 regime 中，它会显著影响耗散动力学。此外，在声子中心线附近具有选定数量强耦合模式的声子浴通过少数声子通道控制耗散，从而大幅缩小吸收光谱线宽。这些发现证明了声子浴在塑造超表面传输特性方面的关键作用，为超表面的精确工程设计提供了一种有前景的方法。
