利用运动原子和场相互作用模型,研究了当两原子处于纠缠态而光场处于真空态时,原子运动及耦合系数的线性变化对量子关联的影响。结果表明,对于单光子过程,随着场模结构参数的增大,量子关联增大;耦合系数的线性变化对量子关联有积极作用;对于双光子过程,与耦合系数为常数的情况相比,场模结构参数及耦合系数的线性变化对量子关联的积极影响作用更显著。

By using the moving atom-field interaction model, the effects of the atomic motion and the linear change of coupling coefficient on quantum correlations are investigated when the two atoms are in the entangled states and the light field is in the vacuum state. The results show that, as for the single-photon process, the quantum correlations increase with the increment of the structure parameters of field mode. The linear change of coupling coefficient plays a positive role on the quantum correlations. As for the two-photon process, the positive effects of the structure parameters of field mode and the linear change of coupling coefficient on the quantum correlations are more obvious if compared with the case that the coupling coefficient is constant.