CVQKD Reconciliation Based on Distributional Transform and Slepian-Wolf Coding

Ravilla Leite, Francisco M. Assis

DOI: 10.14209/sbrt.2024.1571036790

Evento: XLII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2024)

Keywords: CVQKD LDPC Codes Distributional Transform Bit-Flipping

Abstract

In this article, we present an information reconciliation protocol designed for CVQKD based on the Distributional Transform for variable quantization and LDPC Slepian-Wolf coding. The decoding employed a modified Bit-Flipping algorithm to recover the error vector \math(boldsymbol{E}) between the correlated binary sequences of Alice and Bob. Numerical results were obtained by applying an LDPC code with a rate of \math(1/2), in conjunction with Bit-Flipping and Sum-Product decoding. The results encourage the application of the technique using LDPC codes optimized for CVQKD applications.

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