There are many ways to produce quantum coherent control, in which spontaneously induced coherence is an important one.
产生量子相干有很多种方法，其中自发辐射诱导相干就是一种比较重要的方法。
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The result shows that the geometric phase in this cavity QED system is fault-tolerant not only against the classical noise induced by the parameter fluctuation but also against the quantum noise.
The Bohr condition for quantum transitions and the Einstein law for photo-electric effects are approximate results of perturbation. They are violated in the transitions induced by intense lasers.