Landau-Zener transitions in a semiconductor quantum dot

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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...

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Detalles Bibliográficos
Autores principales: Murgida, G.E., Wisniacki, D.A., Tamborenea, P.I.
Formato: JOUR
Materias:
Landau-Zener transitions
Quantum control
Quantum dot
Diabatic
Energy level
Interacting electrons
Landau-Zener models
Probability amplitude
Quasi-one-dimensional
Realistic systems
Time-dependent electric field
Electric fields
Semiconductor quantum dots
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09500340_v56_n6_p799_Murgida
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario: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.

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