【摘要】 在分析单量子位的Bloch球面表示的基础上,结合量子门实现量子态幺正演化的量子态调控机制,提出一种针对两能级封闭量子系统任意量子态的最优制备策略.该策略首先建立两能级量子系统及其控制场的模型;然后借助李群李代数,由经典最优控制的思想和约化动力学来获得最优控制,从而达到两能级封闭量子系统任意量子态的最优制备.理论分析与仿真实验表明了该策略的优越性.更多还原

【Abstract】 Based on analyzing the presentation of the single quantum state on Bloch sphere,a strategy of optimal preparation of arbitrary quantum state of two-level closed quantum systems is proposed.With the help of quantum mechanical logic gate,manipulation of quantum system is realized,on unitary-evolution.The models of two-level quantum systems and its control systems are set up.Then,by using the Lie group,and with classical control theory and dynamics of quantum system,a strategy of optimal preparation of arbitrary quantum state is developed.The theoretical analysis and the simulation of the preparation show the advantage of the idea.更多还原