Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-27T02:37:13.884Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Lent, C. S. and Tougaw, P. D., J. Appl. Phys. 28, 3558 (1993);Google Scholar
A. Lent, C. S. and Tougaw, P. D., J. Appl. Phys. 75, 1818 (1994);Google Scholar
B. Lent, C. S. and Tougaw, P. D., J. Appl. Phys. 84, 2684 (1998)Google Scholar
2. Amlani, I., Orlov, A. O., Snider, G. L., Lent, C. S. and Bernstein, G. H., Appl. Phys. Lett. 72, 2179 (1998);Google Scholar
C. Snider, G. L., Orlov, A. O., Amlani, I., Zuo, X., Bernstein, G. H., Lent, C.S., Merz, J. L. and Porod, W., J. Appl. Phys. 85, 4283 (1999)Google Scholar
3. Wang, C. K., Yakimenko, I. I., Zozoulenko, I. V. and Berggren, K. F., J. Appl. Phys. 84, 2684 (1998); I. I. Yakimenko, et al. Google Scholar
D. Wang, C. K., Yakimenko, I. I., Zozoulenko, I. V. and Berggren, K. F., J. Appl. Phys. 85, 6571 (1999);Google Scholar
4. Sun, H. B. and Milburn, G. J., Phys. Rev. B 59, 10748 (1999)Google Scholar
5. Mahler, G. and Weberruβ, V. A., Quantum Networks (Springer, 1998).Google Scholar