标题： 非线性效应在两能级系统量子控制中的影响 显示英文标题

标题： Nonlinear effect on quantum control for two-level systems

摘要： 传统的量子控制理论关注线性量子系统。 这里我们展示了非线性对两能级系统量子控制的影响，我们发现非线性可以改变量子系统的可控性。 此外，我们证明了李雅普诺夫控制可以用来克服由非线性效应引起的不可控性。 显示英文摘要

摘要： The traditional quantum control theory focuses on linear quantum system. Here we show the effect of nonlinearity on quantum control of a two-level system, we find that the nonlinearity can change the controllability of quantum system. Furthermore, we demonstrate that the Lyapunov control can be used to overcome this uncontrollability induced by the nonlinear effect.