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如果在关联发射的基础之上再引入原子相干,这样的系统可产生明亮的双模亚泊松光。运用Sculy-Lamb理论计算MandelQ因子,一方面,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-0.5。在上述两种情况下,每个关联发射激光(CEL)模呈现亚泊松光子分布,MandelQ因子的最佳值均可达到-0.25。 相似文献
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研究了非线性双光子Jaynes-Cummings(J-C)模型系统中原子偶极矩高阶压缩的时间演化特性及其产生条件。结果表明,在弱场条件下,原子偶极矩色散或吸收分量的二阶和六阶量子涨落可被周期性压缩,非线性修正项或失谐量以及热噪声对压缩程度有显著的影响。 相似文献
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COHERENT POPULATION TRAPPING IN MULTILEVEL LASER-INDUCED CONTINUUM STRUCTURE SYSTEM INCLUDING CASCADE TWO-PHOTON PROCESSES 下载免费PDF全文
We have investigated the atomic coherent population trapping in a mul tilevel laser-induced continuum structure system including cascade two-photon processes, in which two sets of quasicontinua of excited levels to be modeled as the Bixon-Jortner quasicontinuum are laser-embedded into a previously structu reless atomic continuum.The condition leading to the atomic coherent population trapping and the coherent population trapping state are given explicitly. And th e effects of the Fano factors, the laser intensities and the detunings on the am ount of population trapped in the atomic bound states and the populations distri buted in the two sets of quasicontinua are also examined. 相似文献
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We have studied the steady-state behavior of a cascade three-level atom in a two-mode bad cavity which is parametrically driven by a classical field. In the weak field limit, it has been found that the atomic population trapping in the upper-level depends on the cavity photon number not only linearly but also quadratically, and the atomic dipole squeezing can occur. 相似文献
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In this paper, n-photon correlated-spontaneous-emission lasers (GEL's) are studied via the quantum theory of Scully-Lamb. It is shown that inversionless lazing can be exhibited; and phase squeezing can be produced in the inversionless region when the laser intensity is smaller than a certain value. The unified approach to n-photon CEL's is given and the properties between n-photon CEL's (n≥3) and CEL's of n = 1,2 are compared. 相似文献
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