Share Email Print

Proceedings Paper

Photonic quantum digital signatures operating over kilometer ranges in installed optical fiber
Author(s): Robert J. Collins; Mikio Fujiwara; Ryan Amiri; Toshimori Honjo; Kaoru Shimizu; Kiyoshi Tamaki; Masahiro Takeoka; Erika Andersson; Gerald S. Buller; Masahide Sasaki
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The security of electronic communications is a topic that has gained noteworthy public interest in recent years. As a result, there is an increasing public recognition of the existence and importance of mathematically based approaches to digital security. Many of these implement digital signatures to ensure that a malicious party has not tampered with the message in transit, that a legitimate receiver can validate the identity of the signer and that messages are transferable.

The security of most digital signature schemes relies on the assumed computational difficulty of solving certain mathematical problems. However, reports in the media have shown that certain implementations of such signature schemes are vulnerable to algorithmic breakthroughs and emerging quantum processing technologies. Indeed, even without quantum processors, the possibility remains that classical algorithmic breakthroughs will render these schemes insecure.

There is ongoing research into information-theoretically secure signature schemes, where the security is guaranteed against an attacker with arbitrary computational resources. One such approach is quantum digital signatures. Quantum signature schemes can be made information-theoretically secure based on the laws of quantum mechanics while comparable classical protocols require additional resources such as anonymous broadcast and/or a trusted authority.

Previously, most early demonstrations of quantum digital signatures required dedicated single-purpose hardware and operated over restricted ranges in a laboratory environment. Here, for the first time, we present a demonstration of quantum digital signatures conducted over several kilometers of installed optical fiber. The system reported here operates at a higher signature generation rate than previous fiber systems.

Paper Details

Date Published: 24 October 2016
PDF: 7 pages
Proc. SPIE 9996, Quantum Information Science and Technology II, 999604 (24 October 2016); doi: 10.1117/12.2241502
Show Author Affiliations
Robert J. Collins, Heriot-Watt Univ. (United Kingdom)
Mikio Fujiwara, National Institute of Information and Communications Technology (Japan)
Ryan Amiri, Heriot-Watt Univ. (United Kingdom)
Toshimori Honjo, NTT Corp. (Japan)
Kaoru Shimizu, NTT Corp. (Japan)
Kiyoshi Tamaki, NTT Corp. (Japan)
Masahiro Takeoka, National Institute of Information and Communications Technology (Japan)
Erika Andersson, Heriot-Watt Univ. (United Kingdom)
Gerald S. Buller, Heriot-Watt Univ. (United Kingdom)
Masahide Sasaki, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9996:
Quantum Information Science and Technology II
Mark T. Gruneisen; Miloslav Dusek; John G. Rarity, Editor(s)

© SPIE. Terms of Use
Back to Top