Symmetries and dynamics in an AC-driven self-assembled quantum dot lens

Details Symmetries and dynamics in an AC-driven self-assembled quantum dot lens Symmetries and dynamics in an AC-driven self-assembled quantum dot lens

2008-10-08

arxiv.org/abs/0810.1463v1

extended version published on Phys. Rev. B 77, 235405 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

Theoretical results for a single electron in multi-level system given by a lens-shape self-assembled quantum dot in the presence of an intense harmonic electric field are presented. A non-perturbative Floquet approach is used to study the dynamical localization of the particle when going beyond the two-level approach by introducing the full spectral level structure. It is discussed the role of the different quasi-energy sidebands as the parameters of the system change. It is found that the contribution of different drive harmonics is controlled by fine tuning of field intensity. It is also shown that avoided crossings in the quasi-energy spectrum are correlated with the spectral force of the sidebands and dynamical state localization.

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