Continuous-variable quantum key distribution for metropolitan and access networks

doi:10.12267/j.issn.2096-5931.2023.07.007

Abstract

Abstract:

Continuous-variable quantum key distribution using coherent states is an important means of quantum secure communications. It usually realizes key distillation with theoretical unconditional security through the preparation, transmission and measurement of coherent states. It has the advantages of high compatibility with coherent optics communications, high secret key rate within metropolitan area, supporting point-to-multipoint key distribution, and is suitable for large-scale deployment in metropolitan and access networks. This perspective article reviews the protocols, security theory, systematization, and networking development status of continuous-variable quantum key distribution, sorts out the key technologies used in the application scenarios of metropolitan and access networks, and looks forward to its future development trend.

Key words: quantum secure communications, quantum key distribution, continuous variable, metropolitan and access distance, networking

CLC Number:

TN929.11

ZHANG Yichen, BIAN Yiming, WANG Heng, YU Song, XU Bingjie, GUO Hong. Continuous-variable quantum key distribution for metropolitan and access networks[J]. Information and Communications Technology and Policy, 2023, 49(7): 53-59.

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URL:

http://ictp.caict.ac.cn/EN/10.12267/j.issn.2096-5931.2023.07.007

http://ictp.caict.ac.cn/EN/Y2023/V49/I7/53

Figures/Tables 6

References 16

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类型	时间/年	主要研究单位	主要指标	备注
随路本振	2003	法国法布里实验室	75 kbit/s @3.1 dB	首个试验验证
	2007	法国法布里实验室	2 kbit/s @25 km	—
	2013	法国巴黎高等电信学校	0.2 kbit/s @80 km	首个远距离试验
	2016	中国上海交通大学	0.4 kbit/s @100 km	—
	2019	中国北京大学-北京邮电大学联合团队	5.77 kbit/s @49.85 km	商用光纤外场最远距离
	2019	新加坡南洋理工大学	0.25 Mbit/s @2 m	首个芯片化系统
	2020	中国北京大学-北京邮电大学联合团队	6.128 bit/s @202.81 km	实验室最远距离
本地本振	2015	美国橡树岭国家实验室	—	首个本地本振结构实现
	2015	美国桑迪亚国家实验室	42.45 kbit/s @5 m	首个本地本振结构实现
	2022	中国西南通信研究所、北京邮电大学	52.48 Mbit/s @25 km	实验室最高速率
	2022	丹麦理工大学	4.71 Mbit/s @20.3 km	首个组合安全性试验
	2023	中国山西大学	2.11 Mbit/s @80 km	—
	2023	中国西南通信研究所、北京邮电大学	0.51 Mbit/s @100 km	本地本振系统最远距离

类型	时间/年	主要研究单位	主要指标	备注
随路本振	2003	法国法布里实验室	75 kbit/s @3.1 dB	首个试验验证
	2007	法国法布里实验室	2 kbit/s @25 km	—
	2013	法国巴黎高等电信学校	0.2 kbit/s @80 km	首个远距离试验
	2016	中国上海交通大学	0.4 kbit/s @100 km	—
	2019	中国北京大学-北京邮电大学联合团队	5.77 kbit/s @49.85 km	商用光纤外场最远距离
	2019	新加坡南洋理工大学	0.25 Mbit/s @2 m	首个芯片化系统
	2020	中国北京大学-北京邮电大学联合团队	6.128 bit/s @202.81 km	实验室最远距离
本地本振	2015	美国橡树岭国家实验室	—	首个本地本振结构实现
	2015	美国桑迪亚国家实验室	42.45 kbit/s @5 m	首个本地本振结构实现
	2022	中国西南通信研究所、北京邮电大学	52.48 Mbit/s @25 km	实验室最高速率
	2022	丹麦理工大学	4.71 Mbit/s @20.3 km	首个组合安全性试验
	2023	中国山西大学	2.11 Mbit/s @80 km	—
	2023	中国西南通信研究所、北京邮电大学	0.51 Mbit/s @100 km	本地本振系统最远距离