大失谐相互作用时两能级原子消相干性的消除  

Two-level Atom's Decoherence Vanishing from Sight in the Big Detuning Interaction of Atom with Thermal Radiation Field

作　　者：张登玉[1] 

机构地区：[1]衡阳师范学院物理系,湖南衡阳421008

出　　处：《衡阳师范学院学报》2001年第6期7-10,共4页Journal of Hengyang Normal University

摘　　要：两能级原子置于外部环境 (热库 )中 ,在原子与热辐射场大失谐相互作用时外加驱动场 ,得到相互作用过程中原子约化密度算符非对角元。在两能级原子的消相干被消除的情况下 。The problem of the decoherence of two level atom being put in a thermal reservoir through an external controllable driving field is studied.The big detuning interaction of atom with thermal radiation field is considered.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 atoms decoherence vanish from sight.

关 键 词：大失谐相互作用 两能级原子 消相干性 消除 热辐射场 外加驱动场 约化密度算符 量子计算 

分 类 号：O562.2[理学—原子与分子物理] O413[理学—物理]