Untappable key distribution system: a one-time-pad booster. - Geraldo A. Barbosa; Jeroen van de Graaf (CoRR, 2014)

Untappable communication channels over optical fibers from quantum-optical noise. - Geraldo A. Barbosa; Jeroen van de Graaf (IACR Cryptol. ePrint Arch., 2014)

A wireless physically secure key distribution system. - Geraldo A. Barbosa (CoRR, 2016)

A wireless secure key distribution system with no couriers: a One-Time-Pad Revival. - Geraldo A. Barbosa (CoRR, 2019)

Digital Key Distribution Protected by Recorded Quantum Noise. - Geraldo A. Barbosa (IEEE Access, 2024)

Polar Coding and Linear Decoding. - Geraldo A. Barbosa (CoRR, 2025)