For the unitary transformation, one of the most important characteristic quantity is fidelity.
而对于酉变换而言，最重要的一个特征量之一就是保真度。
The properties of the weak-coupling bound polaron in quantum well are studied using the linear combination operator and the unitary transformation method.
在此运用二能级系统幺正演化算符的方法，求解几种较为典型特例的严格解，分析其相位的变化。
The influences of Coulomb field on the properties of strong-coupling polaron in a parabolic quantum wire are studied by using the linear combination operator and the unitary transformation methods.
采用改进的线性组合算符法研究了库仑场对抛物量子线中强耦合极化子性质的影响。
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