2026-06-26T08:38:33Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/337382023-08-11T07:43:51Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Elkouss Coronas, David
author
Martínez Mateo, Jesús
author
Martín, Vicente
2023-06-19T13:27:08Z
2023-06-19T13:27:08Z
2013-04-26
1050-2947
10.1103/PhysRevA.87.042334
https://hdl.handle.net/20.500.14352/33738
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.87.042334
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.
eng
Analysis of a rate-adaptive reconciliation protocol and the effect of leakage on the secret key rate
journal article
URL
https://docta.ucm.es/bitstreams/e0e5f8f0-aa02-4424-9e98-18c5dfc98e3d/download
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6441ebe1620a6540b83673902961d9c8
206018
application/pdf
Elkouss Analysis.pdf