选择原子测量对光场量子特性的影响  

Effect of Selective Atomic Measurement on Quantun Properties of Light Field

作　　者：卢道明[1] 

机构地区：[1]武夷学院电子工程系,福建武夷山354300

出　　处：《光学学报》2010年第6期1804-1808,共5页Acta Optica Sinica

基　　金：福建省自然科学基金(2008J0217)资助课题

摘　　要：考虑双模纠缠相干光场中,其中一束光场注入腔中与一个级联型三能级原子发生共振相互作用的情况。采用数值计算方法,研究了另一束腔外光场的压缩效应,反聚束效应以及描述双模场相关性的Cauchy-Schwartz不等式等量子特性的演化规律。讨论了采用选择原子测量方法和纠缠光中参与原子相互作用的光场的强度对另一束腔外光场量子特性的影响。研究结果表明,采用选择原子测量方法和选择参与相互作用的光场的强度,可导致未参加相互作用的光场量子特性的明显增强。Considering two-mode entangled coherent light field,one mode of the field is poured into the cavity and interacts resonantly with a cascade three-level atom.The squeezing and antibunching effects of the light field outside of the cavity are investigated,and Cauchy-Schwartz inequality is discussed.The influences of the selective atomic measurement and the intensity of the coherent field which interacts with atom on squeezing and antibunching effects of the field outside of the cavity are also discussed.The results obtained by numerical calculations show that quantum properties of the field outside of the cavity can be strengthened through selective atomic measurement and selecting the intensity of the coherent field which interacts with atom.

关 键 词：量子光学 选择原子测量 级联三能级原子 压缩效应 反聚束效应 CAUCHY-SCHWARTZ不等式 

分 类 号：O431.2[机械工程—光学工程]