Surface plasmon-polariton (SPPs) at the interface between a nanocomposite material and a medium, in which triple quantum dots (QDs) are uniformely embedded, are theoretically investigated. The absorption and dispersion spectra of SPPs are shown to have interesting behavior in the proposed system. The plasmonic spectra can be efficiently controlled via gate voltages applied in the triple QD as well as the filling ratio of nanoparticles in the composite. Moreover, the effect of incident frequencies on different features of the propagating plasmons is also manipulated. The propagation length and plasmonic depth are measured with different spectroscopic parameters. This study provides more degrees of freedom for generation and control of SPPs in plasmonic geometries containing QDs or nanocomposites or both. The results may find significant applications in atomic spectroscopy, nano-photonics, photovoltaic devices, biosensors and plasmonster technology.

中文翻译：

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三重量子点与纳米复合物之间界面的表面等离激元极化子的控制

从理论上研究了纳米复合材料与介质之间界面的表面等离振子-极化子（SPPs），其中均匀嵌入了三个量子点（QD）。在所提出的系统中，SPP的吸收光谱和色散光谱显示出有趣的行为。可以通过在三重QD中施加的栅极电压以及复合物中纳米颗粒的填充率来有效控制等离子体光谱。而且，还可以控制入射频率对传播等离子体激元的不同特征的影响。用不同的光谱参数测量传播长度和等离子体深度。这项研究为包含QDs或纳米复合物或两者的等离激元几何结构中SPP的生成和控制提供了更大的自由度。