The IBM scientist who rewrote the rules of information just won computing’s highest prize
Summary
The article chronicles IBM researchers Charles Bennett and Gilles Brassard and their pivotal work in quantum cryptography, including the BB84 protocol and quantum key distribution. It explains how information becomes secure through physical laws rather than mathematics, and notes the 2025 ACM A.M. Turing Award recognizing Bennett’s contributions, underscoring the importance of quantum-safe cryptography as quantum computing evolves.