标题： 多模式深强耦合在多量子阱法布里-珀罗腔中 显示英文标题

标题： Multi-mode Deep Strong Coupling in a Multi Quantum Well Fabry-Perot Cavity

摘要： 我们提出一个简单的实验平台，利用多量子阱（$N = 166$）异质结构实现深强耦合。 该异质结构本身作为法布里-珀罗腔，使得光子模式与回旋共振强耦合，形成朗道极化子。 太赫兹时域光谱揭示了大于模态间距的真空拉比分裂，导致丰富的多模极化子光谱，这由“全连接”多光子、多电子霍普菲尔德耦合模型准确再现。 此外，对腔内电磁场分布的建模揭示了光-物质解耦的证据，即使在零频率的渐近极限下也是如此。 该系统展示了一个稳健的平台，用于探索极端耦合区域，其手性特性在手性腔和手性镜应用中具有潜力。 显示英文摘要

摘要： We present a simple experimental platform to achieve deep-strong coupling using a multi-quantum well ($N = 166$) heterostructure. The heterostructure itself acts as a Fabry-P\'erot cavity, such that the photonic modes strongly couple to the cyclotron resonance to form Landau polaritons. Terahertz time-domain spectroscopy reveals vacuum Rabi splitting larger than the mode spacing, resulting in a rich multi-mode polaritonic spectra which is accurately reproduced by an "all-to-all" multi-photonic, multi-electronic Hopfield coupling model. In addition, modeling of the electromagnetic field distribution inside the cavity reveals evidence of light-matter decoupling, even in the asymptotic limit of zero frequency. The system demonstrates a robust platform for exploring extreme coupling regimes and its chiral nature holds potential for chiral cavity and chiral mirror applications.