Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation

doi:10.1088/1674-1056/ace681

中国物理B ›› 2023, Vol. 32 ›› Issue (10): 100311-100311.doi: 10.1088/1674-1056/ace681

Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation

Hao Wu(吴昊)¹, Hang Zhang(张航)¹, Yiwu Zhu(朱益武)¹, Gaofeng Luo(罗高峰)¹, Zhiyue Zuo(左峙岳)^1,†, Xinchao Ruan(阮新朝)^1,‡, and Ying Guo(郭迎)^1,2,§

1 School of Automation, Central South University, Changsha 410083, China;
2 School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2023-04-10 修回日期:2023-07-05 接受日期:2023-07-12 出版日期:2023-09-21 发布日期:2023-10-08
通讯作者: Zhiyue Zuo, Xinchao Ruan, Ying Guo E-mail:zuo.zhiyue.csu@gmail.com;rxc1126@csu.edu.cn;guoying@bupt.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61871407), the Natural Science Foundation of Hunan Province, China (Grant No. 2021JJ30878), and the Key Research and Development Program of Hunan Province, China (Grant Nos. 2020GK4063 and 2022GK2016).

Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation

Hao Wu(吴昊)¹, Hang Zhang(张航)¹, Yiwu Zhu(朱益武)¹, Gaofeng Luo(罗高峰)¹, Zhiyue Zuo(左峙岳)^1,†, Xinchao Ruan(阮新朝)^1,‡, and Ying Guo(郭迎)^1,2,§

1 School of Automation, Central South University, Changsha 410083, China;
2 School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2023-04-10 Revised:2023-07-05 Accepted:2023-07-12 Online:2023-09-21 Published:2023-10-08
Contact: Zhiyue Zuo, Xinchao Ruan, Ying Guo E-mail:zuo.zhiyue.csu@gmail.com;rxc1126@csu.edu.cn;guoying@bupt.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61871407), the Natural Science Foundation of Hunan Province, China (Grant No. 2021JJ30878), and the Key Research and Development Program of Hunan Province, China (Grant Nos. 2020GK4063 and 2022GK2016).

摘要/Abstract

摘要： Underwater quantum communication plays a crucial role in ensuring secure data transmission and extensible quantum networks in underwater environments. However, the implementation of such applications encounters challenges due to the light attenuation caused by the complicated natural seawater. This paper focuses on employing a model based on seawater chlorophyll-a concentration to characterize the absorption and scattering of light through quantum channels. We propose a multi-scattering random channel model, which demonstrates characteristics of the excess noise in different propagation directions of communication links. Furthermore, we consider the fidelity of a continuous-variable quantum teleportation through seawater channel. To enhance transmission performance, non-Gaussian operations have been conducted. Numerical simulations show that incorporating non-Gaussian operations enables the protocol to achieve higher fidelity transmission or lower fidelity fading rates over longer transmission distances.

关键词: continuous-variable quantum teleportation, multi-scattering underwater channel, non-Gaussian operations

Abstract: Underwater quantum communication plays a crucial role in ensuring secure data transmission and extensible quantum networks in underwater environments. However, the implementation of such applications encounters challenges due to the light attenuation caused by the complicated natural seawater. This paper focuses on employing a model based on seawater chlorophyll-a concentration to characterize the absorption and scattering of light through quantum channels. We propose a multi-scattering random channel model, which demonstrates characteristics of the excess noise in different propagation directions of communication links. Furthermore, we consider the fidelity of a continuous-variable quantum teleportation through seawater channel. To enhance transmission performance, non-Gaussian operations have been conducted. Numerical simulations show that incorporating non-Gaussian operations enables the protocol to achieve higher fidelity transmission or lower fidelity fading rates over longer transmission distances.

Key words: continuous-variable quantum teleportation, multi-scattering underwater channel, non-Gaussian operations

中图分类号: (Quantum communication)

03.67.Hk

03.67.Dd (Quantum cryptography and communication security) 03.67.-a (Quantum information)

Hao Wu(吴昊), Hang Zhang(张航), Yiwu Zhu(朱益武), Gaofeng Luo(罗高峰), Zhiyue Zuo(左峙岳), Xinchao Ruan(阮新朝), and Ying Guo(郭迎). Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation[J]. 中国物理B, 2023, 32(10): 100311-100311.

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Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation

Non-Gaussian approach: Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation

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