Abstract
We present a perturbation investigation of dynamic localizationcondition of two electrons in a strong dc–ac biased quantum dotmolecule. By reducing the system to an Hubbard-type effective two-sitemodel and by applying Floquet theory, we find that the dynamicallocalization phenomenon occurs under certain values of the largestrength of the dc and ac field. This demonstrates the possibility ofusing appropriate dc–ac fields to manipulate dynamical localized statesin mesoscopic devices, which is an essential component of practicalschemes for quantum information processing. Our conclusion isinstructive to the field of quantum function devices.
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