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Secure quantum clock synchronization
Author(s): Antia Lamas-Linares; James Troupe
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Paper Abstract

The ability to synchronize remote clocks plays an increasingly important role in our infrastructure, from maintaining coherence in the electrical grid to allowing precise positioning and navigation for civilian and military applications. However, many of the techniques to establish and maintain this time synchronization have been shown to be susceptible to interference by malicious parties. Here we propose a protocol that builds on techniques from quantum communication to provide a verified and secure time synchronization protocol. In contrast with classical protocols aimed at increasing the security of time distribution, we need not make any assumptions about the distance or propagation times between the clocks. In order to compromise the security of the protocol, an adversary must be able to perform quantum non-demolition measurements of the presence of a singe photon with high probability. The requirement of such quantum measurements raises a serious technological barrier for any would-be adversary

Paper Details

Date Published: 22 February 2018
PDF: 8 pages
Proc. SPIE 10547, Advances in Photonics of Quantum Computing, Memory, and Communication XI, 105470L (22 February 2018); doi: 10.1117/12.2290561
Show Author Affiliations
Antia Lamas-Linares, The Univ. of Texas at Austin (United States)
James Troupe, The Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 10547:
Advances in Photonics of Quantum Computing, Memory, and Communication XI
Zameer Ul Hasan; Philip R. Hemmer; Alan E. Craig; Alan L. Migdall, Editor(s)

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