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Parabolic linear bound potential quantum dot qubit and its optical phonon effect

Wang Zi-Wu Xiao Jing-Lin

Parabolic linear bound potential quantum dot qubit and its optical phonon effect

Wang Zi-Wu, Xiao Jing-Lin
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  • Received Date:  30 May 2006
  • Accepted Date:  13 July 2006
  • Published Online:  05 January 2007

Parabolic linear bound potential quantum dot qubit and its optical phonon effect

  • 1. 内蒙古民族大学物理与机电学院,通辽 028043

Abstract: On the condition of electric-LO phonon strong coupling in parabolic quantum dot, we obtain the eigenenergy and the eigenfuctions of the ground state and the first excited state by using variational method of Peakar type. This system in quantum dot may be employed as a two-level quantum system-qubit. When the electron is in the superposition state of the ground state and the first excited state, we obtain the time evolution of the electron density. It is shown that the period of oscillation decreases with the strength of coupling increasing when the confined length is constant. And the period of oscillation increases with the confined length increasing when the strength coupling is constant.

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