Fano resonances and decoherence in transport through quantum dots
arXiv:cond-mat/0412544 · doi:10.1016/j.physe.2005.05.030
Abstract
A tunable microwave scattering device is presented which allows the controlled variation of Fano line shape parameters in transmission through quantum billiards. We observe a non-monotonic evolution of resonance parameters that is explained in terms of interacting resonances. The dissipation of radiation in the cavity walls leads to decoherence and thus to a modification of the Fano profile. We show that the imaginary part of the complex Fano q-parameter allows to determine the absorption constant of the cavity. Our theoretical results demonstrate further that the two decohering mechanisms, dephasing and dissipation, are equivalent in terms of their effect on the evolution of Fano resonance lineshapes.
arXiv comment9 pages, 7 figures, submitted to Physica E (conference proceedings)
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Cited by in corpus (9)
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- Antiresonances as precursors of decoherence
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- Magnetic-dipolar-mode Fano resonances for microwave spectroscopy of high absorption matter
- Controlling Fano Profiles via Conical Intersections
- Extended transfer matrix method for electron transmission in anisotropic 2D materials: Interplay of strain and (a)periodicity of potentials
- Reflection resonances in surface-disordered waveguides: strong higher-order effects of the disorder
- Quench dynamics of Fano-like resonances in the presence of the on-dot superconducting pairing