Buchumschlag

Fully integrated four-channel wavelength-division multiplexed QKD receiver

Quantum key distribution (QKD) enables secure communication even in the presence of advanced quantum computers. However, scaling up discrete-variable QKD to high key rates remains a challenge due to the lossy nature of quantum communication channels and the use of weak coherent states. Photonic inte...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Beutel, Fabian (VerfasserIn) , Brückerhoff-Plückelmann, Frank (VerfasserIn) , Gehring, Helge (VerfasserIn) , Kovalyuk, Vadim (VerfasserIn) , Zolotov, Philipp (VerfasserIn) , Goltsman, Gregory (VerfasserIn) , Pernice, Wolfram (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 30 September 2022
In: Optica
Year: 2022, Jahrgang: 9, Heft: 10, Pages: 1121-1130
ISSN:2334-2536
DOI:10.1364/OPTICA.468982
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1364/OPTICA.468982
Verlag, lizenzpflichtig, Volltext: https://opg.optica.org/optica/abstract.cfm?uri=optica-9-10-1121
Volltext
Verfasserangaben:Fabian Beutel, Frank Brückerhoff-Plückelmann, Helge Gehring, Vadim Kovalyuk, Philipp Zolotov, Gregory Goltsman, and Wolfram H.P. Pernice
Beschreibung
Zusammenfassung:Quantum key distribution (QKD) enables secure communication even in the presence of advanced quantum computers. However, scaling up discrete-variable QKD to high key rates remains a challenge due to the lossy nature of quantum communication channels and the use of weak coherent states. Photonic integration and massive parallelization are crucial steps toward the goal of high-throughput secret-key distribution. We present a fully integrated photonic chip on silicon nitride featuring a four-channel wavelength-division demultiplexed QKD receiver circuit including state-of-the-art waveguide-integrated superconducting nanowire single-photon detectors (SNSPDs). With a proof-of-principle setup operated at a clock rate of 3.35 GHz, we achieve a total secret-key rate of up to 12.17 Mbit/s at 10 dB channel attenuation with low detector-induced error rates. The QKD receiver architecture is massively scalable and constitutes a foundation for high-rate many-channel QKD transmission.
Beschreibung:Gesehen am 23.01.2023
Beschreibung:Online Resource
ISSN:2334-2536
DOI:10.1364/OPTICA.468982

Ähnliche Einträge