Landau-Zener transitions in a semiconductor quantum dot

G. MURGIDA, D. A. WISNIACKI, P. TAMBORENEA

JOURNAL OF MODERN OPTICS

TAYLOR & FRANCIS LTD

Año: 2009 vol. 56 p. 799 - 804

0950-0340

We study the transitions between neighboring energy levels in a quasi-one-dimensional semiconductor quantum dot with two interacting electrons in it, when it is subject to a linearly time-dependent electric field. We analyze the applicability of a simple two-level Landau-Zener model to describe the evolution of the probability amplitudes in this realistic system. We show that the Landau-Zener model works very well when it is viewed in the adiabatic basis, but it is not as robust in the diabatic basis