TY - JOUR
T1 - Experimental quantum key distribution at 1.3 gigabit-per-second secret-key rate over a 10 dB loss channel
AU - Zhang, Zheshen
AU - Chen, Changchen
AU - Zhuang, Quntao
AU - Wong, Franco N.C.
AU - Shapiro, Jeffrey H.
N1 - Funding Information:
This research was supported by the Air Force Office of Scientific Research (AFOSR) MURI program under Grant No. FA9550-14-1-0052, and by the Office of Naval Research (ONR) under Contract No. N00014-16-C-2069. The authors thank S W Nam, D Zhu and Q Zhao for support on SNSPDs, and E Wong for generating the three-dimensional experimental schematic.
Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2018/4
Y1 - 2018/4
N2 - Quantum 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-per-second 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.
AB - Quantum 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-per-second 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.
KW - coincidence counting
KW - fiber-optic communications
KW - homodyne detection
KW - quantum communications
KW - quantum cryptography
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U2 - 10.1088/2058-9565/aab623
DO - 10.1088/2058-9565/aab623
M3 - Article
AN - SCOPUS:85048065706
VL - 3
JO - Quantum Science and Technology
JF - Quantum Science and Technology
SN - 2058-9565
IS - 2
M1 - 025007
ER -