Experimental quantum key distribution at 1.3 gigabit-per-second secret-key rate over a 10 dB loss channel
AffiliationUniv Arizona, Dept Mat Sci & Engn
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationZheshen Zhang et al 2018 Quantum Sci. Technol. 3 025007
JournalQUANTUM SCIENCE AND TECHNOLOGY
Rights© 2018 IOP Publishing Ltd
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractQuantum key distribution (QKD) enables unconditionally secure communication ensured by the laws of physics, opening a promising route to security infrastructure for the coming age of quantum computers. QKD's demonstrated secret-key rates (SKRs), however, fall far short of the gigabit-persecond rates of classical communication, hindering QKD's widespread deployment. QKD's low SKRs are largely due to existing single-photon-based protocols' vulnerability to channel loss. Floodlight QKD(FL-QKD) boosts SKR by transmitting many photons per encoding, while offering security against collective attacks. Here, we report an FL-QKD experiment operating at a 1.3 Gbit s(-1) SKR over a 10 dB loss channel. To the best of our knowledge, this is the first QKD demonstration that achieves a gigabit-per-second-class SKR, representing a critical advance toward high-rate QKD at metropolitan-area distances.
Note12 month embargo; published online: 3 April 2018
VersionFinal accepted manuscript
SponsorsAir Force Office of Scientific Research (AFOSR) MURI program [FA9550-14-1-0052]; Office of Naval Research (ONR) [N00014-16-C-2069]