激发相干态与级联三能级原子的量子信息保真度

Fidelity of Quantum Information for Cascade Three-Level Atom and Excited Coherent States

讨论了激发相干态光场与级联三能级原子相互作用时原子、光场和整个系统的量子信息保真度的时间演化过程。研究了光场参数和失谐量对保真度的影响。结果表明,光场参数和失谐量对保真度的振荡频率和振荡周期有明显影响,而对保真度的平均值影响甚微。

The evolutions of quantum information fidelity for atoms,field and system in the system of cascade three-level atoms interacting with excited coherent states have been discussed.The effects of field parameters and detuning parameters on fidelity have also been studied.The results indicate that field parameters and detuning parameters have some effects on the frequency and period of quantum information fidelity,but have far fewer effects on the average value of them.