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Λ型三能级原子与Pólya态光场相互作用系统的量子纠缠特性

Quantum Entanglement Characteristics in System Comprising Pólya-State Light Field Interacting with Λ-Type Three-Level Atom

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摘要

运用量子熵理论,探讨了Λ型三能级原子与Pólya态光场相互作用时,光场分布参数、原子相对失谐量、最大光子数、光场概率参数和原子初态对系统量子纠缠特性的影响。结果表明:当Λ型三能级原子与Pólya态光场相互作用时,若初态为两能级等权叠加态,各参量取适当值时可得到最大纠缠度较小的、稳定的、周期性振荡的量子纠缠态,若初态为激发态或三能级等权叠加态,各参量取适当值时可得到最大纠缠度为1.1的、稳定的、周期性振荡的纠缠态。

Abstract

The influences of light-field distribution parameters, atomic relative detuning, maximum photon number, light-field probability parameters, and initial atomic states on quantum entanglement characteristics of a system comprising a Pólya-state light field interacting with a Λ-type three-level atom are analyzed based on the quantum entropy theory. The results denote that when the Λ-type three-level atom interacts with the Pólya-state light field and the initial state is a two-lower-level energy-equal superposition state, a stable and periodically oscillating entangled state with a relatively small maximum entanglement degree can be obtained for appropriate parameter values. However, if the initial state is an excited state or a three-level equal-weight superposition state, a stable and periodically oscillating entangled state with a maximum entanglement degree of 1.1 can be obtained for appropriate parameter values.

Newport宣传-MKS新实验室计划
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DOI:10.3788/LOP56.232701

所属栏目:量子光学

基金项目:内蒙古自治区自然科学基金、内蒙古师范大学“十百千”人才基金;

收稿日期:2019-04-01

修改稿日期:2019-05-28

网络出版日期:2019-12-01

作者单位    点击查看

罗瑞桓:内蒙古师范大学物理与电子信息学院, 内蒙古 呼和浩特 010022
萨楚尔夫:内蒙古师范大学物理与电子信息学院, 内蒙古 呼和浩特 010022内蒙古师范大学图书馆, 内蒙古 呼和浩特 010022

联系人作者:罗瑞桓(631252899@qq.com); 萨楚尔夫(Sacrf@imnu.edu.cn);

备注:内蒙古自治区自然科学基金、内蒙古师范大学“十百千”人才基金;

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引用该论文

Luo Ruihuan,. Quantum Entanglement Characteristics in System Comprising Pólya-State Light Field Interacting with Λ-Type Three-Level Atom[J]. Laser & Optoelectronics Progress, 2019, 56(23): 232701

罗瑞桓,萨楚尔夫. Λ型三能级原子与Pólya态光场相互作用系统的量子纠缠特性[J]. 激光与光电子学进展, 2019, 56(23): 232701

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