Coulomb-enhanced dynamic localization and Bell-state generation in coupled quantum dots
Coulomb-enhanced dynamic localization and Bell-state generation in coupled quantum dots
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DOI：
10.1103/physreva.66.022117
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发表时间：
2002-08-01
影响因子：
2.9
通讯作者：
Xie, XC
中科院分区：
文献类型：
--
作者：
Zhang, P;Xue, QK;Xie, XC
我们研究了交流场驱动下耦合量子点中两个相互作用电子的动力学。我们发现，尽管有很强的库仑斥力，这两个电子仍然可以被交流电场囚禁在其中一个点上。特别是，我们发现这种相互作用可以增强局域效应。我们还演示了产生最大纠缠贝尔态的场激发过程。产生时间由含时薛定谔方程的解析解和数值解决定。
We investigate the dynamics of two interacting electrons in coupled quantum dots driven by an ac field. We find that the two electrons can be trapped in one of the dots by the ac field, in spite of the strong Coulomb repulsion. In particular, we find that the interaction may enhance the localization effect. We also demonstrate the field excitation procedure to generate the maximally entangled Bell states. The generation time is determined by both analytic and numerical solutions of the time-dependent Schrodinger equation.