Analysis of a rate-adaptive reconciliation protocol and the effect of leakage on the secret key rate

Elkouss Coronas, David and Martinez Mateo, Jesus and Martín Ayuso, Vicente (2013). Analysis of a rate-adaptive reconciliation protocol and the effect of leakage on the secret key rate. "Physical Review A", v. 87 (n. 4); pp. 1-7. ISSN 1050-2947. https://doi.org/10.1103/PhysRevA.87.042334.

Description

Title: Analysis of a rate-adaptive reconciliation protocol and the effect of leakage on the secret key rate
Author/s:
  • Elkouss Coronas, David
  • Martinez Mateo, Jesus
  • Martín Ayuso, Vicente
Item Type: Article
Título de Revista/Publicación: Physical Review A
Date: 2013
ISSN: 1050-2947
Volume: 87
Subjects:
Faculty: Facultad de Informática (UPM)
Department: Lenguajes y Sistemas Informáticos e Ingeniería del Software
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Quantum key distribution performs the trick of growing a secret key in two distant places connected by a quantum channel. The main reason is so that the legitimate users can bound the information gathered by the eavesdropper. In practical systems, whether because of finite resources or external conditions, the quantum channel is subject to fluctuations. A rate-adaptive information reconciliation protocol, which adapts to the changes in the communication channel, is then required to minimize the leakage of information in the classical postprocessing. We consider here the leakage of a rate-adaptive information reconciliation protocol. The length of the exchanged messages is larger than that of an optimal protocol; however, we prove that the min-entropy reduction is limited. The simulation results, both in the asymptotic and in the finite-length regime, show that this protocol allows to increase the amount of a distillable secret key.

More information

Item ID: 26657
DC Identifier: http://oa.upm.es/26657/
OAI Identifier: oai:oa.upm.es:26657
DOI: 10.1103/PhysRevA.87.042334
Official URL: https://journals.aps.org/pra/
Deposited by: Memoria Investigacion
Deposited on: 17 Jun 2014 09:46
Last Modified: 22 Sep 2014 11:42
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