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Measurement-based characterization of atmospheric background light in satellite-to-ground quantum key distribution scenarios

Häusler, Stefanie und Orsucci, Davide und Vollmann, Leonard und Peev, Eltimir und Moll, Florian (2024) Measurement-based characterization of atmospheric background light in satellite-to-ground quantum key distribution scenarios. Optical Engineering, 63 (4). Society of Photo-optical Instrumentation Engineers (SPIE). doi: 10.1117/1.OE.63.4.041211. ISSN 0091-3286.

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Offizielle URL: https://www.spiedigitallibrary.org/journals/optical-engineering/volume-63/issue-04/041211/Measurement-based-characterization-of-atmospheric-background-light-in-satellite-to/10.1117/1.OE.63.4.041211.full#_=_

Kurzfassung

Quantum key distribution (QKD) enables private communication with information theoretic security. Free-space optical communication allows one to implement QKD without the limitations imposed by fiber networks such as the exponential scaling of transmission losses in optical fibers. Therefore, free-space QKD via satellite links is a promising technology to provide long-distance quantum communication connections. In free-space QKD systems, background light is the main source of noise, which has to be suppressed by means of spectral, spatial, and temporal filtering to reach a sufficiently low quantum bit error rate (QBER). Only then a quantum key can be exchanged successfully. To be able to define the requirements for a free-space QKD system, the background light must be examined more closely. Current considerations concentrate on cloud-free skies and rural environments. Free-space QKD will also take place when the sky is partly clouded and most likely also in urban environments. Here, an overview of physical causes of background light for downlink scenarios is given. Furthermore, the relation between QBER and background light is derived for a decoy-state BB84 protocol with polarization-encoded qubits to give an example of the dependency. Moreover, a setup to experimentally investigate the background light is shown. Measurement data were taken with this setup in Oberpfaffenhofen near Munich (Germany) in C-band. The measurement data are used to verify a background light simulation tool. The outcome underlines that simulation tools are sufficient for clear sky scenarios.

elib-URL des Eintrags:https://elib.dlr.de/204798/
Dokumentart:Zeitschriftenbeitrag
Titel:Measurement-based characterization of atmospheric background light in satellite-to-ground quantum key distribution scenarios
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Häusler, StefanieStefanie.Haeusler (at) dlr.dehttps://orcid.org/0009-0008-4490-4681161739114
Orsucci, DavideDavide.Orsucci (at) dlr.dehttps://orcid.org/0000-0003-3087-8757NICHT SPEZIFIZIERT
Vollmann, LeonardLeonard.Vollmann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Peev, EltimirEltimir.Peev (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Moll, FlorianFlorian.Moll (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Februar 2024
Erschienen in:Optical Engineering
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:63
DOI:10.1117/1.OE.63.4.041211
Verlag:Society of Photo-optical Instrumentation Engineers (SPIE)
ISSN:0091-3286
Status:veröffentlicht
Stichwörter:Quantum Key Distribution, background light, Quantum Key Distribution receiver, Quantum Bit Error Rate, Optical Ground Station
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation, Navigation, Quantentechnologien
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KNQ - Kommunikation, Navigation, Quantentechnologie
DLR - Teilgebiet (Projekt, Vorhaben):R - Quantenkryptografie mit Satelliten
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Optische Satellitenlinks
Hinterlegt von: Häusler, Stefanie
Hinterlegt am:17 Jun 2024 09:21
Letzte Änderung:17 Jun 2024 09:21

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