Floquet evolution in qutip

运用qutip自带的grape算法,让门操作的fidelity达到最大(to do the grape calculation to find the highest fidelity)

量子光学程序包Qutip的详细讲解的书籍，里面介绍了Qutip的各种函数及其使用方法。(A book introducted the quantum optics package Qutip with detailed explanation, which includes various functions of Qutip and the explanations how to use these functions.)