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Paper detail

Information Reconciliation for Continuous-Variable Quantum Key Distribution using Non-Binary Low-Density Parity-Check Codes

An information reconciliation method for continuous-variable quantum key distribution with Gaussian modulation that is based on non-binary low-density parity-check (LDPC) codes is presented. Sets of regular and irregular LDPC codes with different code rates over the Galois fields $GF(8)$, $GF(16)$, $GF(32)$, and $GF(64)$ have been constructed. We have performed simulations to analyze the efficiency and the frame error rate using the sum-product algorithm. The proposed method achieves an efficiency between $0.94$ and $0.98$ if the signal-to-noise ratio is between $4$ dB and $24$ dB.

preprint2016arXivOpen access
Christoph PacherJesus Martinez-MateoJörg DuhmeTobias GehringFabian Furrer
math.ITInformation Theoryquant-ph
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Christoph PacherJesus Martinez-MateoJörg DuhmeTobias GehringFabian Furrer

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