交流驱动自组装量子点透镜的对称性和动力学
Symmetries and dynamics in an AC-driven self-assembled quantum dot lens
摘要:
给出了强谐波电场作用下透镜状自组装量子点多能级系统中单个电子的理论结果。本文采用非微扰Floquet方法,通过引入全谱能级结构,研究了超越二能级方法时粒子的动力学局域化。讨论了不同准能边带随系统参数变化的作用。研究发现,不同驱动谐波的贡献是由电场强度的微调控制的。它还表明,避免交叉的准能谱相关的谱力的边带和动力学状态本地化。
英文摘要:
Theoretical results for a single electron in multi-level system given by a lens-shape self-assembled quantum dot in the presence of an intense harmonic electric field are presented. A non-perturbative Floquet approach is used to study the dynamical localization of the particle when going beyond the two-level approach by introducing the full spectral level structure. It is discussed the role of the different quasi-energy sidebands as the parameters of the system change. It is found that the contribution of different drive harmonics is controlled by fine tuning of field intensity. It is also shown that avoided crossings in the quasi-energy spectrum are correlated with the spectral force of the sidebands and dynamical state localization.
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