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Author

John Burniston

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Preprint Sep 2026

Security framework for practical quantum key distribution with imperfect devices

This work presents a security proof for generic prepare-and-measure QKD protocols, including decoy-state BB84, with imperfect and imperfectly characterized sources and detectors using the marginal-constrained entropy accumulation theorem (MEAT).

Jerome Wiesemann, John Burniston, Devashish Tupkary et al. · 0 citations
Preprint Sep 2026

Unconditional Security of Discrete-Modulated CV-QKD from Infinite-Dimensional MEAT

This work establishes the first complete composable finite-size security proof for DM CV-QKD protocols against coherent attacks, incorporating imperfect detectors and both fixed- and variable-length protocol variants, and introduces two central results of broader interest: an infinite-dimensional marginal-constrained e...

Lars Kamin, Ian George, John Burniston et al. · 0 citations

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