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Quantum Dot Cell Coupled to a Single Mode Quantum Cavity

Published online by Cambridge University Press:  17 March 2011

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

We study the properties of the charge distribution (polarization) of a 4-quantum dot square cell with two electrons, induced or modified by the coupling to a single quantized mode field. The effect of the relevant parameters (tunneling between dots, the amplitude of the electron-cavity interaction, cavity frequency) is investigated in the properties of polarization of the two-electron fundamental states. We further investigate the effects of asymmetry in the electron-cavity interaction in each dot and evaluate the modification to the dynamic evolution of the polarization. We find that there is a range of values of the asymmetry for which the polarization is improved. This suggests that an optimization of the coupling of the quantum dot cell with its environment may yield more reliable and stable operation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 642: Symposium J – Semiconductor Quantum Dots II , 2000 , J3.1.1
Copyright
Copyright © Materials Research Society 2001

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References

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