Abstract

We propose an asymmetric linear triple quantum dot molecule model for a recent experimental device with a double neighboring dot-dot tunneling coupling, of which the linear and nonlinear dynamical properties are analytically studied by using an amplitude variable approach combined with multi-scale method. It is shown that double transparency windows are formed by the double tunneling coupling. Both dark and bright optical solitons are then obtained, of which both the types and the propagating velocity can be controlled by the two tunneling coupling strengths. Interestingly, the propagating velocity of the solitons can approach to zero at certain tunneling coupling strengths, the motionless optical solitons appearing there. The results indicate potential applications of the semiconductor quantum devices for optical soliton storage.

Graphical abstract

中文翻译：

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线性三重量子点分子中可控的双隧道诱导光孤子存储

摘要

我们为具有双相邻点-点隧穿耦合的最新实验装置提出了一种不对称线性三重量子点分子模型，该模型通过使用幅度可变方法与多尺度方法相结合来分析其线性和非线性动力学特性。结果表明，通过双隧道耦合形成了双透明窗口。然后获得暗和亮光学孤子，其类型和传播速度都可以通过两个隧穿耦合强度来控制。有趣的是，在一定的隧道耦合强度下，孤子的传播速度可能接近零，在此出现静止的光学孤子。结果表明半导体量子器件在光孤子存储中的潜在应用。

图形概要