摘要
本文研究了具有A型跃迁结构的三能级原子与两个压缩态光场多光子相互作用过程中的一些量子效应。通过数值计算得到不同参数条件下原子能级布居数反转的时间特性,光场平均光子数及其统计性质的时间演化,并讨论了多光子过程对加深光场压缩状态的影响。计算结果表明,多光子相互作用使系统的基本Rabi振荡频率增大,崩坍—复原持续期缩短,Mandel参数的改变加剧,光场的压缩增强。
Some quantum effects in the multiphoton interaction processes of a three-level A-shaped atom with two squeezed modes are studied in detail. The temporal behaviour of the atomic inversion, the time evolution for mean photon number and the statistical property of the field are obtained numerically under different parameters. The effect of the multi-photon processes on the squeezing phenomenon is also discussed. The numerical results show that the multiphoton interaction processes increase the Rabi oscillation frequency, shorten the duration of collapse-revival, change the MandePs Q-parameter and enhance the squeezing of the field.
关键词
多光子过程
光子统计
量子效应
multiphoton processes, photon statistics, quantum effects, squeezed coherent state, collapse-revival
