摘要
以二能级原子作为量子位 ,利用求解相互作用系统约化密度矩阵非对角元的方法 ,分别研究热库中量子位模型和依赖强度耦合Jaynes Cummings模型的消相干特性。当外加驱动场消除消相干时 ,得到两种模型下驱动场必须满足的约束方程。
Using a two-level atom as a quantum bit, We have studied the decoherent properties of the single quantum bit model in a thermal reservoir and the intensity dependent coupling Jaynes-Cummings model by calculating the non-oposite angle elements of the reduced density matrix of the intraction system,respectively. We also work out the restriction equation that must be satisfied by the external controllable driving field when the decoherence is to be eliminated.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2004年第1期89-95,共7页
Journal of Atomic and Molecular Physics
基金
湖南省科技厅中青年科技基金 (0 0JZY2 13 6)
湖南省自然科学基金 (0 2JJY2 0 9)的资助课题
