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Dynamic Localization Condition of Two Electrons in a Strong dc-ac Biased Quantum Dot Molecule |
| WANG Li-Min1,2;DUAN Su-Qing1;ZHAO Xian-Geng1;LIU Cheng-Shi3 |
| 1Institute of Applied Physics and Computational Mathematics, PO Box 8009(26), Beijing 100088
2Department of Physics, Hebei Normal University, Shijiazhuang 050091
3Interdisciplinary Center of Theoretical Studies, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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WANG Li-Min, DUAN Su-Qing, ZHAO Xian-Geng et al 2004 Chin. Phys. Lett. 21 370-373 |
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Abstract 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-as 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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73.63.Kv
42.50.Hz
03.67.Lx
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Published: 01 February 2004
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| PACS: |
73.63.Kv
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(Quantum dots)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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03.67.Lx
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(Quantum computation architectures and implementations)
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