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Quantum key distribution with passive decoy state selection

  • We propose a quantum key distribution scheme which closely matches the performance of a perfect single photon source. It nearly attains the physical upper bound in terms of key generation rate and maximally achievable distance. Our scheme relies on a practical setup based on a parametric downconversion source and present day, nonideal photon-number detection. Arbitrary experimental imperfections which lead to bit errors are included. We select decoy states by classical postprocessing. This allows one to improve the effective signal statistics and achievable distance.

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Metadaten
Author:Wolfgang MauererORCiDGND, Christine SilberhornORCiDGND
DOI:https://doi.org/10.1103/physreva.75.050305
Parent Title (English):Physical Review A
Publisher:American Physical Society
Document Type:Article
Language:English
Year of first Publication:2007
Release Date:2022/11/24
Volume:75
Issue:5
Institutes:Fakultät Informatik und Mathematik
Fakultät Informatik und Mathematik / Labor für Digitalisierung (LFD)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Digitalisierung
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG