【摘要】 作者研究了自旋为1/2的粒子在随时间变化的磁场中的运动情况.该系统哈密顿量具有SU(2)代数结构.用代数动力学方法对此系统进行求解,得到了严格的解析解.基于严格解,就可构造一位量子逻辑门.通过调节磁场强度和频率,可以控制该量子逻辑门,实现一位量子逻辑门的任何操作.更多还原

【Abstract】 The auathors investigate a particle with spin-1/2 moving in a time-dependent magnetic field. The system has an SU(2) algebraic structure. Using algebraic dynamical method, authors have obtained the rigorous analytical solution to the time dependent Schroedinger equation. Based on the analytical solution, authors have realize the universal single qubit logic gate controlled by the amplitude and frequency of magnetic field and the six special single qubit gates are realized as well.更多还原