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Proceedings Paper

Provably secure time distribution for the electric grid
Author(s): A. M. Smith; P. G. Evans; B. P. Williams; W. P. Grice
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Paper Abstract

We demonstrate a quantum time distribution (QTD) method that combines the precision of optical timing techniques with the integrity of quantum key distribution (QKD). Critical infrastructure is dependent on microprocessor- and programmable logic-based monitoring and control systems. The distribution of timing information across the electric grid is accomplished by GPS signals which are known to be vulnerable to spoofing. We demonstrate a method for synchronizing remote clocks based on the arrival time of photons in a modified QKD system. This has the advantage that the signal can be verified by examining the quantum states of the photons similar to QKD.

Paper Details

Date Published: 21 May 2015
PDF: 4 pages
Proc. SPIE 9500, Quantum Information and Computation XIII, 950007 (21 May 2015); doi: 10.1117/12.2178917
Show Author Affiliations
A. M. Smith, Oak Ridge National Lab. (United States)
P. G. Evans, Oak Ridge National Lab. (United States)
B. P. Williams, Oak Ridge National Lab. (United States)
W. P. Grice, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 9500:
Quantum Information and Computation XIII
Eric Donkor; Andrew R. Pirich; Michael Hayduk, Editor(s)

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