混合态二能级原子双光子过程的光子统计特性  

Photon Statistical Properties in the Two photon Process with Two level Atomic Mixed-states

作　　者：聂义友[1] 宋永清 罗开基[1] 乐建新[1] 熊小华[1] 

机构地区：[1]江西师范大学物理系,江西南昌330027 [2]江西新余钢铁公司职工大学,江西新余336500

出　　处：《江西师范大学学报（自然科学版）》2000年第1期75-79,共5页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：江西省自然科学基金资助!(0 0 10 0 2 )

摘　　要：采用时间演化算符方法和数值计算 ,研究了相干光场与混合态二能级原子双光子过程的光子统计分布特性 .结果表明 :量子崩塌与复苏性质和原子初始的混合程度无关 ,当 0 .97≤ ｜S｜ ≤ 1时 ,辐射光子会周期性地呈现短时的亚泊松统计分布 ,随着原子初始混合程度的增大 ,Q因子的时间平均值不断增大 。In this paper, the statistical distribution properties of the photon in the two photon process with two level atomic mixed state are studied by means of the time evolution operator method and numerical calculation. The results show that the quantum collapse and revival properties do not depend on the mixing extent of the atomic initial state. Sub poissonian photon statistical distribution arise periodically as 0.97≤|S|≤1; with the increasing of the mixing extent of the atomic initial state, the average value of Q will become larger, and the statistical characteristics of the radiat photon is getting far from Sub poissonian photon statistics.

关 键 词：混合态 双光子 亚泊松光子统计 二能级原子 

分 类 号：O431[机械工程—光学工程]