Differential phase shift quantum secret sharing using a twin field

被引：42

作者：

Gu, Jie ^{[1
,2
]}

Cao, Xiao-Yu ^{[1
,2
]}

Yin, Hua-Lei ^{[1
,2
]}

Chen, Zeng-Bing ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Quantum cryptography - Malware;

D O I：

10.1364/OE.417856

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Quantum secret sharing (QSS) is essential for multiparty quantum communication, which is one of cornerstones in the future quantum internet. However, a linear rate-distance limitation severely constrains the secure key rate and transmission distance of QSS. Here, we present a practical QSS protocol among three participants based on the differential phase shift scheme and twin field ideas for the solution of high-efficiency multiparty communication task. In contrast to a formerly proposed differential phase shift QSS protocol, our protocol can break the linear rate-distance bound, theoretically improving the secret key rate by three orders of magnitude in a 300-km-long fiber. Furthermore, the new protocol is secure against Trojan horse attacks that cannot be resisted by previous differential phase shift QSS. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：9165 / 9173

页数：9

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