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Effect of Coulomb Interaction on Dynamical Localization in a Two-Electron Quantum-Dot Molecule |
| WANG Li-Min1;DUAN Su-Qing1;ZHAO Xian-Geng1;LIU Cheng-Shi2 |
| 1Institute of Applied Physics and Computational Mathematics, PO Box 8009(26), Beijing 100088
2Interdisciplinary Centre 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 2033-2036 |
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Abstract The combined interaction of Coulomb interaction and ac fields with two electrons in a quantum dot molecule is studied respectively with numerical simulation, perturbation theory and the approximation of driven two-level model. The dynamical localization occurs with the ac field whose ratio of the amplitude to the angular frequency is a root of n-order Bessel functions, where n is determined by the Coulomb interaction energy. Such results are explained with either the driven two-level approximation or the degenerated three-level model and verified by the numerical simulations.
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| Keywords:
73.63.Kv
42.50.Hz
03.67.Lx
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Published: 01 October 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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