q形变光场与级联型三能级原子相互作用中场的压缩效应  

Photon squeezing effects of q-deformed light field interacting with a cascade three-level atom

作　　者：张慧慧[1] 姚淑娜[1] 周晓光[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《光学技术》2007年第5期676-679,共4页Optical Technique

摘　　要：建立了q形变光场与级联型三能级原子相互作用的非线性理论,求得相互作用绘景中薛定谔方程的形式解,利用数值计算讨论了q形变对相互作用中场压缩效应的影响并与q-偶相干光场的情形做了对比分析。研究发现,q偏离1的程度越大,q形变对场压缩效应的调控能力越强,反映出q形变的非线性行为对量子相干性的干扰以及对量子特性的影响。当q→1时,恢复为普通线性理论。和q-偶相干光场的情形做的对比分析,反映出q-奇相干光场不仅不存在压缩效应,还会弱化压缩效应。这与q-偶相干光场和q-奇相干光场存在不同的量子效应的结论完全一致。The nonlinear theory of interaction between q-deformed light field and a cascade threc-level atnm is established. And the formal solution of Schrdinger equation in the representation is obtained. Then, the influence of q-deformed on photon squeezing effects is studied through numerical calcolation. The results show that more q deviates from 1 the stronger the controllalility to squeezing effects. It reflects that q-deformed nonlinear action has influence on the quantum coherence and quantum properties. When q→ 1, the theory reduces to the common linear theory. The analyse with q-deformed even coherent light field reflects that q-deformed odd coherent light field not only don＇t have squeezing effects, but also weaken it. This conclusion is same with that q- deformed even coherent light field and q-deformed odd coherent light field have different quanturo properties.

关 键 词：量子光学 量子特性 Q形变 级联型三能级原子 压缩效应 

分 类 号：O431.2[机械工程—光学工程]