消除简并双光子过程中二能级原子的消相干性

Elimination of two-level atom's decoherence by an external driving field in degenerate two-photon processes

研究了置于外部环境 (热库 )中的二能级原子在外加驱动场时原子的消相干问题 .得到简并双光子过程中原子约化密度算符非对角元 .在二能级原子的消相干被消除的情况下 ,讨论外加驱动场的特性 .

We have studied the problem of decoherence of two-level atoms which are put in a thermal reservoir through an external controllable driving field. The non-opposite angle element of two-level atom's reducible density rectangular array is obtained. We discuss the properties of an external driving field when the atom's decoherence is eliminated.