与光场依赖强度耦合多光子通道中原子周期量子回声的产生和控制

研究了与光场依赖强度耦合多光子通道中原子态保真度演化，探讨了原子周期量子回声的产生和控制。通过分别考察原子相干分布角、光场平均光子数以及原子跃迁时吸收（或发射）的光子数对原子态保真度演化的影响，获得了产生和控制原子周期量子回声的系统参数，并揭示了原子态高保真输出的物理实质。

Preparation and control for atom periodic quantum echo via light field intensity-dependent coupling multiphoton channel

In this paper, the evolution of the fidelity of atomic states is investigated via a light field intensity-dependent coupling multiphoton channel , the preparation and the control for atom periodic quantum echo is discussed, as well. Considering the effects on the evolution of the fidelity of the atomic states by atomic coherent distribution angle, average photon number of the field, and photon number k absorbed(emitted) as the atom transition, respectively, we obtain the system parameter of preparation and control the atom periodic quantum echo, show up its physical characters of a high-fidelity output of the atomic information.