Information Reconciliation for Continuous-Variable Quantum Key Distribution Beyond the Devetak-Winter Bound Using Short Blocklength Error Correction Codes

Autor:	Gümüş, Kadir, Frazão, João dos Reis, Albores-Mejia, Aaron, Škorić, Boris, Liga, Gabriele, Gültekin, Yunus Can, Bradley, Thomas, Alvarado, Alex, Okonkwo, Chigo
Rok vydání:	2024
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	In this paper we introduce a reconciliation protocol with a two-step error correction scheme using a short blocklength low rate code and a long blocklength high rate code. We show that by using this two-step decoding method it is possible to achieve secret key rates beyond the Devetak-Winter bound. We simulate the protocol using short blocklength low-density parity check code, and show that we can obtain reconciliation efficiencies up to 1.5. Using these high reconciliation efficiencies, it is possible double the achievable distances of CV-QKD systems. Comment: Pre-print
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2409.13667 Zobrazit plný text záznamu View this record from Arxiv