Dynamic Localization Condition of Two Electrons in a Strong dc-ac Biased Quantum Dot Molecule

WANG Li-Min; DUAN Su-Qing; ZHAO Xian-Geng; LIU Cheng-Shi

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Dynamic Localization Condition of Two Electrons in a Strong dc-ac Biased Quantum Dot Molecule

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@@ We present a perturbation investigation of dynamic localization condition of two electrons in a strong dc-ac biased quantum dot molecule. By reducing the system to an Hubbard-type effective two-site model and by applying Floquet theory, we find that the dynamical localization phenomenon occurs under certain values of the large strength of the dc and ac field. This demonstrates the possibility of using appropriate dc-ac fields to manipulate dynamical localized states in mesoscopic devices, which is an essential component of practical schemes for quantum information processing. Our conclusion is instructive to the field of quantum function devices.

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《中国物理快报：英文版》 |2004年第2期|370-373|共4页
作者
WANG Li-Min; DUAN Su-Qing; ZHAO Xian-Geng; LIU Cheng-Shi;
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Institute of Applied Physics and Computational Mathematics, PO Box 800926, Beijing 100088;

Department of Physics, Hebei Normal University, Shijiazhuang 050091;

Institute of Applied Physics and Computational Mathematics, PO Box 800926, Beijing 100088;

Institute of Applied Physics and Computational Mathematics, PO Box 800926, Beijing 100088;

Interdisciplinary Center of Theoretical Studies, Chinese Academy of Sciences, Beijing 100080;

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Dynamic Localization Condition of Two Electrons in a Strong dc-ac Biased Quantum Dot Molecule

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