Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels

doi:10.1088/1674-1056/ac490a

中国物理B ›› 2022, Vol. 31 ›› Issue (6): 60306-060306.doi: 10.1088/1674-1056/ac490a

Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels

Qingquan Peng(彭清泉)¹, Qin Liao(廖骎)^2,†, Hai Zhong(钟海)¹, Junkai Hu(胡峻凯)¹, and Ying Guo(郭迎)^1,3,‡

1 School of Automation, Central South University, Changsha 410083, China;
2 College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China;
3 School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2021-11-18 修回日期:2021-12-31 接受日期:2022-01-07 出版日期:2022-05-17 发布日期:2022-05-17
通讯作者: Qin Liao, Ying Guo E-mail:llqqlq@hnu.edu.cn;yingguo@csu.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 62101180 and 61871407), the Key R&D Program of Hunan Province (Grant No. 2022GK2016), the State Key Laboratory of High Performance Computing, National University of Defense Technology (Grant No. 202101-25), and the Fundamental Research Funds for the Central Universities (Grant No. 531118010371).

Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels

Qingquan Peng(彭清泉)¹, Qin Liao(廖骎)^2,†, Hai Zhong(钟海)¹, Junkai Hu(胡峻凯)¹, and Ying Guo(郭迎)^1,3,‡

1 School of Automation, Central South University, Changsha 410083, China;
2 College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China;
3 School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2021-11-18 Revised:2021-12-31 Accepted:2022-01-07 Online:2022-05-17 Published:2022-05-17
Contact: Qin Liao, Ying Guo E-mail:llqqlq@hnu.edu.cn;yingguo@csu.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 62101180 and 61871407), the Key R&D Program of Hunan Province (Grant No. 2022GK2016), the State Key Laboratory of High Performance Computing, National University of Defense Technology (Grant No. 202101-25), and the Fundamental Research Funds for the Central Universities (Grant No. 531118010371).

摘要/Abstract

摘要： The trans-media transmission of quantum pulse is one of means of free-space transmission which can be applied in continuous-variable quantum key distribution (CVQKD) system. In traditional implementations for atmospheric channels, the 1500-to-1600-nm pulse is regarded as an ideal quantum pulse carrier. However, the underwater transmission of this pulses tends to suffer from severe attenuation, which inevitably deteriorates the security of the whole CVQKD system. In this paper, we propose an alternative scheme for implementations of CVQKD over satellite-to-submarine channels. We estimate the parameters of the trans-media channels, involving atmosphere, sea surface and seawater and find that the short-wave infrared performs well in the above channels. The 450-nm pulse is used for generations of quantum signal carriers to accomplish quantum communications through atmosphere, sea surface and seawater channels. Numerical simulations show that the proposed scheme can achieve the transmission distance of 600 km. In addition, we demonstrate that non-Gaussian operations can further lengthen its maximal transmission distance, which contributes to the establishment of practical global quantum networks.

关键词: continuous-variable quantum key distribution (CVQKD), short-wave infrared, satellite-to-submarine

Abstract: The trans-media transmission of quantum pulse is one of means of free-space transmission which can be applied in continuous-variable quantum key distribution (CVQKD) system. In traditional implementations for atmospheric channels, the 1500-to-1600-nm pulse is regarded as an ideal quantum pulse carrier. However, the underwater transmission of this pulses tends to suffer from severe attenuation, which inevitably deteriorates the security of the whole CVQKD system. In this paper, we propose an alternative scheme for implementations of CVQKD over satellite-to-submarine channels. We estimate the parameters of the trans-media channels, involving atmosphere, sea surface and seawater and find that the short-wave infrared performs well in the above channels. The 450-nm pulse is used for generations of quantum signal carriers to accomplish quantum communications through atmosphere, sea surface and seawater channels. Numerical simulations show that the proposed scheme can achieve the transmission distance of 600 km. In addition, we demonstrate that non-Gaussian operations can further lengthen its maximal transmission distance, which contributes to the establishment of practical global quantum networks.

Key words: continuous-variable quantum key distribution (CVQKD), short-wave infrared, satellite-to-submarine

中图分类号: (Quantum cryptography and communication security)

03.67.Dd

03.67.Hk (Quantum communication) 03.67.-a (Quantum information)

Qingquan Peng(彭清泉), Qin Liao(廖骎), Hai Zhong(钟海), Junkai Hu(胡峻凯), and Ying Guo(郭迎). Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels[J]. 中国物理B, 2022, 31(6): 60306-060306.

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Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels

Short-wave infrared continuous-variable quantum key distribution over satellite-to-submarine channels

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