河北师范大学学报—

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刊名：河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
主办：河北师范大学
ISSN： 1000-5854
CN： 13-1061/N
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与∧型三能级原子相互作用的Number-phase态光场的量子特性

罗瑞桓¹

萨楚尔夫^1,2

1. 内蒙古师范大学物理与电子信息学院, 内蒙古呼和浩特 010022;
2. 内蒙古师范大学图书馆, 内蒙古呼和浩特 010022
DOI： 10.13763/j.cnki.jhebnu.nse.2019.01.005

Quantum Properties in a System of the Number-phase States Field Interacting with a ∧-type Three-level Atom

LUO Ruihuan¹, SACHUERFU^1,2

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摘要/Abstract

摘要：

运用全量子理论，讨论了Number-phase态光场和∧型三能级原子相互作用时，其初始状态及某些参数对光场压缩及光子反聚束效应的影响.若原子相对失谐量r取值较小，则光场中光子聚束与反聚束效应更迭出现，随着r逐渐增大，两效应呈现时间域逐渐趋同，且呈现出一定的类周期性；光场参数ξ较小时，光场中两效应同样交替出现，若选择较大光场参数ξ，光场表现出不间断的类周期性震荡反聚束效应；选取一定的r与ξ的值，在演化初期一定时间范围内，系统光场的X₁分量呈现出压缩效应.由此可知，∧型三能级原子与Number-phase态光场互相作用时，光场可表现出不间断的反聚束效应，且在一定的条件下可处于压缩态.

Abstract：

The effects of atomic initial state and some parameters on the optical field squeezing properties and photon anti-bunching effects in a system of the radiation field in Number-phase state interacting with the ∧-type three-level atom are discussed by using the full quantum theory.If the relative detuning amount of the atom (r) is small,the photon bunching and the anti-bunching effect in the light field occur alternately.As r gradually increases,the time for the bunching effect and the anti-bunching effect gradually becomes the same and shows certain periodicity.When the light field parameter ξ is small,the bunching and anti-bunching effects of photons in the light field alternately appear.If the parameter ξ is large,the light field exhibits an uninterrupted periodic oscillating anti-bunching effect.By selecting the appropriate values of r and ξ,the X₁ component of the system light field exhibits the squeezing effect in a certain time domain at the beginning of time evolution.Therefore,it can be seen that when the ∧-type three-level atom interacts with the radiation field in Number-phase state,the light field can exhibit an continuous anti-bunching effect,and the light field can also be in a squeezed state under certain conditions.

关键词

关键词： Number-phase态 ; 反聚束效应 ; 光场压缩 ; ∧型三能级原子

Key words： Number-phase state ; anti-bunching effect ; optical field squeezing ; ∧-type three-level atom

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