有限深势阱下极性晶体膜量子比特及其声子效应  

Polar Slab Qubit and its Optical Phonon Effect in Finite Well

作　　者：王秀清[1] 肖景林[1] 

机构地区：[1]内蒙古民族大学物理与电子信息学院,内蒙古通辽028043

出　　处：《量子光学学报》2012年第4期339-343,共5页Journal of Quantum Optics

基　　金：内蒙古高校研究项目(NJ10119)

摘　　要：采用Peaker变分法,研究有限深势阱下极性晶体膜中量子比特及其声子效应。晶体膜中这样的二能级体系可作为一个量子比特。当膜中电子处于基态和第一激发态的叠加态时,电子的概率密度在空间作周期性震荡,得出振荡周期随耦合强度的增加而减小,随膜厚的增加而增大。By using variational method of Peakar type, studied the polar slab qubit and its optical phonon effect in finite well, This system in a polar slab can be employed as a system-qubit. When the electron is in the superposition state of the ground state and the first excited state, we obtained the time evolution of the electron density. It is shown that the period of oscillation decreases with the strength of coupling increasing, but increases with the slab thickness.

关 键 词：晶体膜 量子信息 量子比特 有限深势阱 

分 类 号：O431[机械工程—光学工程]