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JOURNALS // University proceedings. Volga region. Physical and mathematical sciences // Archive

University proceedings. Volga region. Physical and mathematical sciences, 2010 Issue 1, Pages 91–100 (Mi ivpnz617)

Physics

A qubit model based on a semiconductor quantum dot with a controlled relocation of a two-center wave function in an external electric field

V. D. Krevchika, A. V. Razumovb, E. A. Tyurina, Yu. D. Palchenkova

a Penza State University, Penza
b Penza State Pedagogical University named after V. G. Belinsky, Penza

Abstract: Studied theoretically for the quantum bit model of semiconductor quantum dot with $D_2^-$-center with controlled external electric field of the relocation of two-center wave function. Orthonormal basis quantum bit $|0\rangle$ and $|1\rangle$ are selected in such a way as to conform to the localized electron states centered on the donor and the donor, biased to the border of CT. It is shown that the effect of relocation of the two-center wave function associated with the displacement of the center of gravity of the electron cloud as the energy (quantum-Stark effect) and to coordinate. The possibility of realization in such quantum bit quantum gate (NOT).

Keywords: quantum bit, quantum dot, the effect of relocation of the two-center wave function, the terms, the range of photoexcitation.

UDC: 539.23; 539.216.1



© Steklov Math. Inst. of RAS, 2024