Differential phase shift quantum secret sharing using twin field
- URL: http://arxiv.org/abs/2104.03467v2
- Date: Sat, 10 Apr 2021 07:56:47 GMT
- Title: Differential phase shift quantum secret sharing using twin field
- Authors: Jie Gu, Xiao-Yu Cao, Hua-Lei Yin, Zeng-Bing Chen
- Abstract summary: Quantum secret sharing essential for multiparty quantum communication.
linear rate-distance limitation severely constrains the secure key rate and transmission distance of QSS.
New protocol is secure against Trojan horse attacks that cannot be resisted by previous differential phase shift QSS.
- Score: 10.23503559207364
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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 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.
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