Journal of Sichuan University
Realization of Universal Single Qubit Logic Gate
Shun-Jin Wang
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.