摘要
在Λ型量子拍系统中再引入原子相干，可以产生明亮的双模亚泊松光．运用ＳｃｕｌｙＬａｍｂ理论计算了ＭａｎｄｅｌＱ因子．当相对相位和相对振幅的量子噪声被抑制到真空噪声水平时，平均模呈现亚泊松光子分布；或者当平均相位和平均振幅的量子噪声被抑制到真空噪声水平时，相对模呈现亚泊松光子分布，ＭａｎｄｅｌＱ因子的最佳值均可达到－０５；并且，在上述两种情况下，每个关联自发辐射激光模呈现亚泊松光子分布，ＭａｎｄｅｌＱ因子的最佳值均可达到－０２５．
Abstract It is shown that the Λ quantum beat system, into which a new atomic coherence is introduced, can produce bright two mode sub Poissonian light. The Mandel Q parameter is calculated using Scully Lamb theory. On one hand, when quantum noises of the relative amplitude and relative phase drop to vaccum noise levels, the average mode exhibits sub Poissonian photon distribution; when quantum noises of the average amplitude and average phase drop to vaccum noise levels, the relative mode exhibits sub Poissonian photon statistics; the optimum Mandel Q parameter is -0.5. On the other hand, in the above two cases, each of the correlated spontaneous emission laser modes exhibits sub Poissonian photon statistics with optimum Mandel Q parameter of -0.25.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第8期1296-1303,共8页
Acta Physica Sinica
基金
国家自然科学基金
