Quadripartite entanglement with injected atomic coherence

Quadripartite entanglement with injected atomic coherence
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注入原子相干性的四方纠缠

DOI:
10.1088/0953-4075/49/1/015501
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发表时间:
2016-01
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
通讯作者:
Xiao Zhu
Xiao Zhu
中科院分区:
其他
文献类型:
--
作者:
Xidong Wang;Fei Wang;Xiao Zhu

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参考文献

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我们提出了一种通过在初始叠加态中相干制备五能级k型原子来产生四部greenberger - horn - zeilinger纠缠的方案。数值分析了获得输出真四部纠缠的初始原子居数和原子相干性的条件。研究发现,当底层种群数量远远大于上层种群数量时,良好的缠结就会发生,反之亦然。此外,还讨论了量子纠缠与线性增益系数、腔阻尼常数和热涨落效应的关系。我们的数值结果证实,通过选择合适的初始原子居数值可以实现四部纠缠,这为实验实现提供了方便。
We propose a scheme to generate quadripartite Greenberger-Horne-Zeilinger entanglement by coherently preparing the five-level K-type atoms in a superposition initially. The conditions of initial atomic populations and atomic coherences to obtain the output genuine quadripartite entanglement are analyzed numerically in detail. It is found that good entanglement occurs when populations of the bottom levels are much more than the upper levels, or vice versa. In addition, the dependence of quantum entanglement on linear gain coefficient, cavity damping constant, and thermal fluctuation effect are also discussed. Our numerical results confirm that the quadripartite entanglement can be realized by choosing proper values of the initial atomic population, which provide convenience for experimental implementation.
挤压变换模式与修饰原子的双通道相互作用:三能级系统中四波混频的纠缠增强
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