Phase-error-estimation security framework for quantum key distribution with correlated sources

arXiv:2601.08417 · quant-ph · Submitted 2026-01-13 · Read on arXiv

quant-ph

Submitted: 2026-01-13

Updated: 2026-09-21

Comments: 21 pages, 1 figure. v2: Updated to accepted manuscript

Journal ref: Phys. Rev. Research 8, L032045 (2026)

DOI: 10.1103/tkx1-23xz

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Admissibility — 14× in this paper · explained in 2 episodes
• Trace — 6× in this paper · explained in 2 episodes
• Fidelity — 5× in this paper · explained in 2 episodes
• Admissibility Conditions — 4× in this paper
• Verification — 4× in this paper · explained in 2 episodes
• Trace Distance — 3× in this paper · explained in 3 episodes
• Core — 2× in this paper · explained in 2 episodes
• Information Leakage — 2× in this paper · explained in 2 episodes
• Marginalconstrained Entropy Accumulation Theorem — 1× in this paper

Sources

• R'enyi security framework against coherent attacks applied to decoy-state QKD
• Proving security of BB84 under source correlations
• Security of quantum key distribution with source and detector imperfections through phase-error estimation
• Modeling and Characterization of Arbitrary Order Pulse Correlations for Quantum Key Distribution
• Marginal-constrained entropy accumulation theorem
• Security proofs for practical QKD: variations, techniques, gaps, and limitations
• Quantum key distribution with unbounded pulse correlations
• Optimal key rates for quantum key distribution with partial source characterization
• Practical Phase-Coding Side-Channel-Secure Quantum Key Distribution
• Phase error estimation for passive detection setups with imperfections and memory effects

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