Entanglement performance of light through the composite free space channel

Shujing Zhang; Jianhong Shi; Jiancheng Zhao; Hailong Zhang; Wansu Bao

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Entanglement performance of light through the composite free space channel

机译：通过复合空间通道的光的纠缠性能

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摘要

Entanglement transmission is utilized widely in quantum communication. In this paper we establish a model, which characterizes the performance of entanglement state passing through the composite free space channel. This free space channel is compounded with atmosphere, sea surface and underwater channel. Based on the model, the entanglement photon pairs transmitted through composite channel are simulated. Simulation results show that the beam wandering, the incident angle of the beam on the sea surface, the concentration of chlorophyll in the seawater and other factors will lead to the degradation of the entanglement and these factors have a nonlinear relationship with transmittance. Moreover, the increase of the chlorophyll concentration is found to be a relatively heavy impact on the entanglement. In addition, expanding the aperture size of the receiving telescope will improve entanglement. The research of this paper has momentous meaning to the transmission of quantum entanglement in free space. What's more, the results have an extremely vital reference value for quantum communications in diverse natural environments.

机译：缠结传输广泛用于量子通信。在本文中，我们建立了一种模型，其特征在于通过复合空间通道的缠结状态的性能。这种自由空间通道与大气，海面和水下渠道复合。基于该模型，模拟通过复合通道传输的缠结光子对。仿真结果表明，光束徘徊，海面上梁的入射角，海水中叶绿素的浓度与其他因素导致缠结的劣化，这些因素具有与透射率的非线性关系。此外，发现叶绿素浓度的增加是对缠结的影响是相对强烈的影响。此外，扩展接收望远镜的孔径尺寸将改善缠结。本文的研究对自由空间中量子缠结传递的重要意义。更重要的是，在不同自然环境中的量子通信具有极其重要的参考价值。

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来源
《Optical and quantum electronics》 |2021年第2期|81.1-81.12|共12页
作者
Shujing Zhang; Jianhong Shi; Jiancheng Zhao; Hailong Zhang; Wansu Bao;
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作者单位

Henan Key Laboratory of Quantum Information and Cryptography PLA SSF IEU Zhengzhou 450001 China;

Henan Key Laboratory of Quantum Information and Cryptography PLA SSF IEU Zhengzhou 450001 China;

PLA SSF IEU Zhengzhou 450001 China;

Henan Key Laboratory of Quantum Information and Cryptography PLA SSF IEU Zhengzhou 450001 China;

Henan Key Laboratory of Quantum Information and Cryptography PLA SSF IEU Zhengzhou 450001 China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Entanglement; Composite free space channel; Bell parameter;

机译：纠缠;复合空间通道;贝尔参数;

Entanglement performance of light through the composite free space channel

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