Experimental demonstration of finite-size general security via discrete-modulated CVQKD with real time postprocessing

arXiv:2609.20596 · quant-ph · Submitted 2026-09-17 · Read on arXiv

quant-ph

Submitted: 2026-09-17

Updated: 2026-09-17

Code: https://github.com/araujoms/ConicQKD.jl

Terminology

• Calibration — 6× in this paper · explained in 7 episodes
• Local Oscillator — 5× in this paper
• Heterodyne Receiver — 3× in this paper
• Polarization Controller — 3× in this paper
• Quantum Random Number Generator — 3× in this paper
• Variable Optical Attenuator — 3× in this paper
• Beam Splitter — 1× in this paper
• Core — 1× in this paper · explained in 2 episodes
• Decode — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Entanglement — 1× in this paper · explained in 4 episodes
• Optical Fiber Communication Conference — 1× in this paper

Sources

• Continuous-variable quantum key distribution system: past, present, and future
• Effective discrete-modulated continuous variable QKD under general attacks
• Marginal-constrained entropy accumulation theorem
• A rigorous and complete security proof of decoy-state BB84 quantum key distribution
• R'enyi security framework against coherent attacks applied to decoy-state QKD
• Security Proof for Variable-Length Quantum Key Distribution
• Defining Security in Quantum Key Distribution
• Julia: A Fresh Approach to Numerical Computing
• Performance enhancements for a generic conic interior point algorithm
• Solving natural conic formulations with Hypatia.jl
• JuMP 1.0: Recent improvements to a modeling language for mathematical optimization
• Generalized Numerical Framework for Improved Finite-Sized Key Rates with R'enyi Entropy
• The many faces of degeneracy in conic optimization
• Robust Interior Point Method for Quantum Key Distribution Rate Computation

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