Making the most of leftovers: Improved privacy amplification for quantum key distribution

arXiv:2609.38306 · quant-ph · Submitted 2026-09-29 · Read on arXiv

quant-ph

Submitted: 2026-09-29

Updated: 2026-09-29

Comments: 14+13 pages

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

Terminology

• Verification — 16× in this paper · explained in 2 episodes
• Trace — 8× in this paper · explained in 2 episodes
• Fidelity — 5× in this paper · explained in 2 episodes
• Entanglement — 3× in this paper · explained in 3 episodes
• Trace Distance — 2× in this paper · explained in 3 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Distillation — 1× in this paper · explained in 2 episodes
• Pruning — 1× in this paper · explained in 4 episodes

Sources

• Rethinking quantum smooth entropies: Tight one-shot analysis of quantum privacy amplification
• R'enyi security framework against coherent attacks applied to decoy-state QKD
• Security of Quantum Key Distribution

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