Short Blocklength Error Correction Codes for Continuous-Variable Quantum Key Distribution

2025/07/04 by Kadir Gümüş, Gümüş, Kadir, João Frazão +11
Computer Science · #FOS: Computer and information sciences #FOS: Physical sciences #Information Theory (cs.IT) #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum-Dot Cellular Automata

paper · doi:10.48550/arxiv.2507.03529

openalex publication_date 2025/07/04 · openalex created_date 2025/10/20 · openalex updated_date 2026/07/28

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.

Citations

• Rate-adaptive Reconciliation for Experimental Continuous-variable Quantum Key Distribution with Discrete Modulation over a Free-space Optical Link
• Low Rate Protograph-Based LDPC Codes for Continuous Variable Quantum Key\n Distribution
• Quantum cryptography: Public key distribution and coin tossing
• Distillation of secret key and entanglement from quantum states

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