Zulkifli Basyirah, Ahmad Khushaini Muhammad Asif, Azeman Nur Hidayah, Md Jamil Mohd Suzeren, Tg Abdul Aziz Tg Hasnan, Md Zain Ahmad Rifqi
Opt Express. 2024 May 20;32(11):19676-19683. doi: 10.1364/OE.519939.
The discovery of hybrid states in strong coupling interaction has gained growing attention in cavity-quantum electrodynamics research owing to its fundamental directives and potential in advanced optical applications. The ultra-confined mode volume of plasmonic cavity gold nanorods (AuNRs), particularly at the nanorod tip "hotspot" provides a large coupling strength, a prerequisite for a coherent energy exchange in the strong coupling regime. Here, we reported a remarkable Rabi splitting of ∼231 meV between gold nanorods longitudinal localized surface plasmon resonance (LLSPR) mode and quantum dots (QDs) at ambient conditions, monitored by dielectric medium tuning. Numerical simulations confirmed the result, displaying absorption spectral splitting.
由于其基本指导意义和在先进光学应用中的潜力，强耦合相互作用中混合态的发现已在腔量子电动力学研究中受到越来越多的关注。等离子体腔金纳米棒（AuNRs）的超受限模式体积，特别是在纳米棒尖端“热点”处，提供了较大的耦合强度，这是强耦合 regime 中相干能量交换的先决条件。在这里，我们报道了在环境条件下，通过介电介质调谐监测到金纳米棒纵向局域表面等离子体共振（LLSPR）模式与量子点（QDs）之间存在约231 meV 的显著拉比分裂。数值模拟证实了该结果，显示出吸收光谱分裂。
