Quantum Pioneers
Artur Ekert
1961 · Polish-British · Physics
Oxford and NUS physicist who invented entanglement-based quantum cryptography (E91) and helped establish quantum information science as a distinct field.
Why they matter
Ekert independently discovered a completely different approach to quantum key distribution from BB84 — one based on entanglement and Bell inequality violations rather than single-photon polarization. The E91 protocol connects quantum cryptography directly to the foundations of quantum mechanics, and underlies device-independent QKD schemes — the most secure known form of quantum communication. Ekert also co-founded the Centre for Quantum Technologies in Singapore.
Key contributions
E91 Quantum Key Distribution
1991Invented an entanglement-based quantum cryptography protocol that uses Bell inequality violations as the security foundation — connecting practical cryptography to quantum foundations.
Centre for Quantum Technologies
2007Co-founded one of the world's leading quantum information research institutes at the National University of Singapore.
Related on QuantumAtlas