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QKD parameter estimation by two-universal hashing

Ostrev, Dimiter (2023) QKD parameter estimation by two-universal hashing. Quantum, 7, p. 894. Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften. doi: 10.22331/q-2023-01-13-894. ISSN 2521-327X.

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Official URL: https://dx.doi.org/10.22331/q-2023-01-13-894


This paper proposes and proves security of a QKD protocol which uses two-universal hashing instead of random sampling to estimate the number of bit flip and phase flip errors. This protocol dramatically outperforms previous QKD protocols for small block sizes. More generally, for the two-universal hashing QKD protocol, the difference between asymptotic and finite key rate decreases with the number $n$ of qubits as $cn^{-1}$, where $c$ depends on the security parameter. For comparison, the same difference decreases no faster than $c'n^{-1/3}$ for an optimized protocol that uses random sampling and has the same asymptotic rate, where $c'$ depends on the security parameter and the error rate.

Item URL in elib:https://elib.dlr.de/193465/
Document Type:Article
Additional Information:This work was performed while the author was at the Interdisciplinary Centre for Security Reliability and Trust, University of Luxembourg, Esch-sur-Alzette, L-4364, Luxembourg. This work is supported by the Luxembourg National Research Fund, under CORE project Q-CoDe (CORE17/IS/11689058).
Title:QKD parameter estimation by two-universal hashing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Ostrev, DimiterUNSPECIFIEDhttps://orcid.org/0000-0002-4098-0969UNSPECIFIED
Date:January 2023
Journal or Publication Title:Quantum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:p. 894
Publisher:Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
Keywords:Quantum Key Distribution, Parameter Estimation, Two-Universal Hashing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - QKD-systems and their practical safety
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Ostrev, Dimiter Valentinov
Deposited On:23 Jan 2023 16:24
Last Modified:23 Jan 2023 16:24

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