This work models the Kerr effect in double quantum dot (DQD) ladder-plus-Y system using the density matrix theory. The QD inhomogeneity and wetting layer effect are considered. The Kerr effect is shown to be increased at small pumping where the linear absorption is inhibited. Under very weak probe field in comparison to the pump field, no electromagnetically induced transparency window is shown.

中文翻译：

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双量子点结构中梯加Y构型的Kerr效应

这项工作使用密度矩阵理论对双量子点（DQD）阶梯加Y系统中的Kerr效应进行建模。考虑了QD不均匀性和润湿层效应。在抑制线性吸收的小泵送情况下，克尔效应会提高。与泵浦场相比，在非常弱的探头场下，未显示电磁感应的透明窗口。