J4 ›› 2011, Vol. 28 ›› Issue (1): 110-114.

• Semiconductor Opto-electronics • Previous Articles     Next Articles

Two-level system of a parabolic quantum dot

WANG Qi-wen, HONG Lan   

  1. College of Physics and Electronic Information, Hulunbei`er College, Haila`er 021008, China
  • Received:2010-03-22 Revised:2010-04-22 Published:2011-01-28 Online:2011-01-14
  • Supported by:

    Project supported by Natural Science Foundation of Inner Mongolia (NJ09178)

Abstract:

On the condition of electron-LO phonon strong coupling in a parabolic quantum dot , we obtain the eigenenergies and the eigenfuctions of the ground state and the first excited state using variational method of Pekar type. The system in quantum dot may be employed as a two- level quantum system qubit. The relations on the electron-LO phonon strong coupling, the confinement length with the electron probability density were investigated. The results indicate that the electron probability density increases with increasing the electron-LO phonon strong coupling and decreasing the confinement length. Our results should be meaningful for making a qubit.

Key words: quantum information, two-level system, variational method, quantum dot

CLC Number: