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Decoherence Effects in Arrays of Coupled Quantum Dots

Published online by Cambridge University Press:  17 March 2011

E. Cota ,
F. Rojas  and
S. E. Ulloa
E. Cota
Affiliation:
Centro de Ciencias de la Materia Condensada – UNAM Ensenada, B.C., México 22800
F. Rojas
Affiliation:
Centro de Ciencias de la Materia Condensada – UNAM Ensenada, B.C., México 22800
S. E. Ulloa
Affiliation:
Department of Physics & Astronomy, and Condensed Matter and Surface Sciences Program, Ohio University, Athens OH 45701
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Abstract

We study the dynamics of the charge distribution (polarization) in an array of four quantum dots located at the corners of a square. The array has two extra electrons in a neutralizing background. We take into account electron-phonon interaction effects using a quantum Markovian master equation approach. Results show that dissipative effects are determinant in the dynamical response of a quantum-dot cell close to a nearby driver cell with prescribed polarization varying with time. The response is shown to depend strongly on temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 642: Symposium J – Semiconductor Quantum Dots II , 2000 , J1.12.1
Copyright
Copyright © Materials Research Society 2001

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References

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