摘要
以CS2费米共振耦合振动为例，用混合的相干态和压缩态研究四种保真度动力学，结果表明新近提出的三种保真度是相互正关联的，其中由Wang等提出的保真度（Phys．Lett．A373，58（2008））与量子互熵的反关联行．
The dynamics of four fidelities is studied for mixed coherent states and mixed squeezed states of Fermi-resonance coupling vibrations in molecule CS2. It is demonstrated that those fidelities are dominant-positively correlated with each other, one of which by Wang et al. （Phys. Lett. A 373, 58 （2008）） is the most striking in dominant anti-correlation with quantum mutual entropy. That is useful for molecular quantum computing and quantum information.
基金
ACKNOWLEDGMENT This work was supported by the National Natural Science Foundation of China （No.10675050）.
关键词
保真度
量子互熵
振动分析
Fidelity, Quantum mutual entropy, Vibrational analysis
