Abstract Graphene plasmonic (GP) in terahertz spectral range has been used to enhance the linear and nonlinear optical properties of conic-shaped InAs/GaAs quantum dots (QDs) coupled to wetting layer. Single layer graphene flakes with rectangular geometry in three configurations were located beneath the wetting layer (WL) and by exciting the plasmonic edge modes the transition dipole moments (TDMs) of S-to-P transition were calculated. Optimization on distance and thickness has been done to reach highest TDM. The results showed that the real and imaginary parts of linear susceptibility were enhanced ten and eighteen times, respectively. For third-order susceptibility, seven hundred and twelve thousand times enhancements have been observed for real and imaginary parts, respectively.

中文翻译：

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石墨烯等离子体辅助增强具有润湿层的圆锥形 InAs/GaAs 量子点的线性和非线性光学特性

摘要 太赫兹光谱范围内的石墨烯等离子体 (GP) 已被用于增强耦合到润湿层的锥形 InAs/GaAs 量子点 (QD) 的线性和非线性光学特性。具有三种配置的矩形几何形状的单层石墨烯薄片位于润湿层 (WL) 下方，并通过激发等离子体边缘模式计算 S-to-P 跃迁的跃迁偶极矩 (TDM)。对距离和厚度进行了优化以达到最高的 TDM。结果表明，线性磁化率的实部和虚部分别增强了 10 倍和 18 倍。对于三阶磁化率，实部和虚部分别观察到了 71.2 万倍的增强。