Short Blocklength Error Correction Codes for Continuous-Variable Quantum Key Distribution
Kadir G\"um\"u\c{s}, Jo\~ao dos Reis Fraz\~ao, Boris \v{S}kori\'c, Gabriele Liga, Aaron Albores-Mejia, Thomas Bradley, and Chigo Okonkwo
TL;DR
This paper presents a novel two-step error correction scheme for continuous-variable quantum key distribution that enables the use of small blocklength codes, significantly boosting secret key rates over long distances.
Contribution
It introduces a new two-step error correction method that allows small blocklength codes to improve key rates in quantum communication.
Findings
Secret key rates increased by up to 7.3 times at 140km distance.
Enables use of small blocklength error correction codes in quantum key distribution.
Improves efficiency of reconciliation process in CV-QKD systems.
Abstract
We introduce a two-step error correction scheme for reconciliation in continuous-variable quantum key distribution systems. Using this scheme, it is possible to use error correction codes with small blocklengths (1000 bits), increasing secret key rates at a distance of 140km by up to 7.3 times.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Information and Cryptography · Quantum-Dot Cellular Automata