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Communication system technology for demonstration of BB84 quantum key distribution in optical aircraft downlinks

Moll, Florian und Nauerth, Sebastian und Fuchs, Christian und Horwath, Joachim und Rau, Markus und Weinfurter, Harald (2012) Communication system technology for demonstration of BB84 quantum key distribution in optical aircraft downlinks. In: Proc. of SPIE Vol. 8517, Seiten 851703-1. SPIE Press. Laser Communication and Propagation through the Atmosphere and Oceans, 13.-15. Aug. 2012, San Diego, USA. ISBN 9780819492340.

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Kurzfassung

Quantum Key Distribution (QKD), either fiber based or free-space, allows for provably secure key distribution solely based on the laws of quantum mechanics. Feasibility of QKD systems in aircraft-ground links was demonstrated with a successful key exchange. Experiment flights were undertaken during night time at the site of the German Aerospace Center (DLR) Oberpfaffenhofen, Germany. The aircraft was a Dornier 228 equipped with a laser communication terminal, originally designed for optical data downlinks with intensity modulation and direct detection. The counter terminal on ground was an optical ground station with a 40 cm Cassegrain type receiver telescope. Alice and Bob, as the transmitter and receiver systems usually are called in QKD, were integrated in the flight and ground terminals, respectively. A second laser source with 1550 nm wavelength was used to transmit a 100 MHz signal for synchronization of the two partners. The so called BB84 protocol, here implemented with faint polarization encoded pulses at 850nm wavelength, was applied as key generation scheme. Within two flights, measurements of the QKD and communication channel could be obtained with link distance of 20 km. After link acquisition, the tracking systems in the aircraft and on ground were able to keep lock of the narrow QKD beam. Emphasis of this paper is put on presentation of the link technology, i.e. link design and modifications of the communication terminals. First analysis of link attenuation, performance of the QKD system and scintillation of the sync signal is also addressed.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Communication system technology for demonstration of BB84 quantum key distribution in optical aircraft downlinks
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Moll, FlorianDLR
Nauerth, SebastianLMU
Fuchs, ChristianDLR
Horwath, JoachimDLR
Rau, MarkusLMU
Weinfurter, HaraldLMU
Datum:2012
Erschienen in:Proc. of SPIE Vol. 8517
Referierte Publikation:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 851703-1
Verlag:SPIE Press
ISBN:9780819492340
Status:veröffentlicht
Stichwörter:Quantum key distribution, free-space optical communication, aircraft-ground link, KNOCGOP
Veranstaltungstitel:Laser Communication and Propagation through the Atmosphere and Oceans
Veranstaltungsort:San Diego, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:13.-15. Aug. 2012
Veranstalter :SPIE
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation und Navigation
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KN - Kommunikation und Navigation
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Multimedia Satellitennetze
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Satellitennetze
Hinterlegt von: Florian Moll
Hinterlegt am:14 Nov 2012 09:48
Letzte Änderung:05 Aug 2013 09:47

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