论文标题
金属纳米球处局部表面等离子体的量子电动力学描述
Quantum electrodynamics description of localized surface plasmons at a metal nanosphere
论文作者
论文摘要
金属纳米层中局部表面等离子体（LSP）的规范量化方案是基于微观模型的，该模型由电磁场组成的微观模型，描述等离子的振荡器以及描述了血浆以外的激发的储层。该完全量子电动力学理论的本征谱显示了一个频谱，其中包括辐射去极化和扩展，包括来自准静态LSP模式的红色变成，粒径增加。这些光谱曲线正确匹配了具有精确的经典电动力学（MIE理论）获得的光谱曲线。目前的方案提供了近场和远场区域的每个等离子体电场，从而证明了其在量子等离子间和纳米磁磁性领域的效用。
A canonical quantization scheme for localized surface plasmons (LSPs) in a metal nanosphere is presented based on a microscopic model composed of electromagnetic fields, oscillators that describe plasmons, and a reservoir that describes excitations other than plasmons. The eigenmodes of this fully quantum electrodynamic theory show a spectrum that includes radiative depolarization and broadening, including redshifting from the quasi-static LSP modes, with increasing particle size. These spectral profiles correctly match those obtained with exact classical electrodynamics (Mie theory). The present scheme provides the electric fields per plasmon in both near- and far-field regions whereby its utility in the fields of quantum plasmonics and nano-optics is demonstrated.
