Experimental transmission of quantum digital signatures over 90 km of installed optical fiber using a differential phase shift quantum key distribution system

Robert J. Collins, Ryan Amiri, Mikio Fujiwara, Toshimori Honjo, Kaoru Shimizu, Kiyoshi Tamaki, Masahiro Takeoka, Erika Andersson, Gerald S. Buller, Masahide Sasaki

研究成果: Article査読

50 被引用数 (Scopus)

抄録

Quantum digital signatures (QDSs) apply quantum mechanics to the problem of guaranteeing message integrity and non-repudiation with information-theoretical security, which are complementary to the confidentiality realized by quantum key distribution (QKD). Previous experimental demonstrations have been limited to transmission distances of less than 5 km of optical fiber in a laboratory setting. Here we report, to the best of our knowledge, the first demonstration of QDSs over installed optical fiber, as well as the longest transmission link reported to date. This demonstration used a 90 km long differential phase shift QKD to achieve approximately one signed bit per second, an increase in the signature generation rate of several orders of magnitude over previous optical fiber demonstrations.

本文言語English
ページ(範囲)4883-4886
ページ数4
ジャーナルOptics Letters
41
21
DOI
出版ステータスPublished - 2016 11月 1
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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