Mesoscopic "Rydberg" atom in a microwave field

Details Mesoscopic "Rydberg" atom in a microwave field Mesoscopic "Rydberg" atom in a microwave field

2004-11-05

arxiv.org/abs/cond-mat/0411155v2

Eur. Phys. J. B 46, 515-518 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figs, explanations added

Scientific paper

10.1140/epjb/e2005-00282-4

We establish analogy between a microwave ionization of Rydberg atoms and a charge transport through a chaotic quantum dot induced by a monochromatic field in a regime with a potential barrier between dot contacts. We show that the quantum coherence leads to dynamical localization of electron excitation in number of photons absorbed inside the dot. The theory developed determines the dependence of localization length on dot and microwave parameters showing that the microwave power can switch the dot between metallic and insulating regimes.

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