期刊论文

Time Evolution of Atomic Occupancy in the Two-photon T-C Model via Intensity-dependent Coupling

中文

长沙理工大学学报(自然科学版)

1672-9331

2005

2

3

79-84

10.3969/j.issn.1672-9331.2005.03.015

(03A003,03C064,04C121):湖南省教育厅科研项目

本校为第一机构

研究了依赖强度耦合压缩真空场与耦合双原子双光子跃迁相互作用系统原子布居数的时间演化规律,讨论了光场的初始压缩因子、原子间相互作用和原子的初态对原子布居数时间演化的影响.结果表明:当原子间相互作用较弱时,原子布居的时间演化曲线呈现周期性的崩塌-回复现象,随着原子间相互作用的加强,崩塌-回复周期变短,以至消失.原子布居时间演化曲线的振荡幅度随光场初始压缩因子的增大而明显地减小.

The time evolution of atomic occupancy for the system of squeezed vacuum field interacting with two coupling atoms via intensity-dependent coupling in two-photon transition are investigated. The influences of the atomic initial state, the interaction between atoms and the initial squeezed parameter of field on the atomic occupancy are discussed. The results show that periodical collapse-revival phenomenon of the time evolution of atomic occupancy appears, which is caused by the influence of the dipole-dipole interaction between atoms. The periods of the collapserevival shortens till the collap...