采用三点Hubbard模型和Floquet定理 ,研究了在强交变电场驱动下线形三量子点分子中激子的动力学行为 .数值计算表明 ,尽管驱动电场倾向使电子和空穴在空间上分离 ,但在合适的外电场驱动下 ,初始局域在一个量子点中的电子和空穴依旧保持其初始局域状态 .应用微扰理论求解Floquet方程 ,从而得到准能的解析解 .表明在准能级发生交叉点 ,激子可呈现出动态局域化 . The three-point Hubbard model and the Floquet theorem were used to study the dynamical behavior of excitons in a linear three-quantum dot driven by a strong alternating electric field. Numerical calculations show that although the driving electric field tends to spatially separate electrons and holes, Under the proper external electric field, the electrons and holes in the initial local quantum dots still maintain their initial local states, and the perturbation theory is used to solve the Floquet equation to obtain the quasi-analytical solutions. At the point of intersection, excitons can exhibit dynamic localization.