Hiskett, P.
, Rosenberg, D.
, Peterson, C.
, Hughes, R.
, Nordholt, J.
, Nam, S.
, Lita, A.
and Miller, A.
(2006),
Long-distance quantum key distribution in optical fibre, New Journal of Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32334
(Accessed December 3, 2024)
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Long-distance quantum key distribution in optical fibre
Published
Author(s)
Philip A. Hiskett, Danna Rosenberg, Charles G. Peterson, Richard J. Hughes, Jane E. Nordholt, , ,
Abstract
Use of low-noise detectors can both increase the secret bit rate of long-distance quantum key distribution (QKD) and dramatically extend the length of a fibre optic link over which secure keys can be distributed. Previous work has demonstrated the use of ultra-low-noise transition-edge sensors (TESs) in a QKD system with transmission over 50 km. In this study, we demonstrate the potential of the TESs by successfully generating an error-corrected, privacy-amplified key over 148.7 km of dark optical fibre at a mean photon number υ = 0.1, or 184.6 km of dark optical fiber at a mean photon number of 0.5. We have also exchanged secret keys over 67.5 km, that is secure against powerful photon-number-splitting (PNS) attacks.Citation
New Journal of Physics
Volume
8
Issue
193
Pub Type
Journals
Download Paper
Keywords
cryptography, quantum information, quantum key distribution, single photon detectors, superconductors, transition-edge sensor
Citation
Issues
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Created September 13, 2006, Updated October 12, 2021