有限深势阱下抛物量子线量子比特及其声子效应

Parabolic Quantum Wire Qubit and Its Optical Phonon Effect in Finite Well

采用Peaker变分法,研究了在有限深势阱下抛物量子线量子比特及其声子效应。量子线中这样的二能级体系可作为一个量子比特。当量子线中电子处于基态和第一激发态的叠加态时,电子的概率密度|ψ01(t,x,y,0)|2随着势阱宽度的增加而减小;电子的振荡周期T0随耦合强度α的增大而减小;振荡周期T0随受限长度l0的增加而增加。

By the variational method of Peakar type, we studied the qua phonon effect in Finite well. This system in a parabolic quantum wire may When the electron was in the superposition state of the ground state obtained the electron density Variations with the width of the potentia decreases with the strength of coupling increasing, but increases with the ntum wire qubit and its optical be employed as a system-qubit. and the first excited state, we 1 well, the period of oscillation slab thickness.