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Incoming links: Artur Ekert
Artur Ekert Created 2026-10-24 Updated 2026-11-05
Artur Ekert proposed deriving a shared cryptographic key from measurements on entangled particle pairs while testing other measurement settings through a Bell inequality. The different settings therefore serve two purposes: correlated results supply candidate key bits, and the observed correlations constrain possible descriptions of the source and an eavesdropper. The proposal connected a foundational test of quantum mechanics with the operational task of quantum key distribution, under the assumptions of its measurement and security model.[ref]
Quantum cryptography based on Bell's theorem by Artur K. Ekert. 1991 proposal, entangled pairs, key settings and Bell-correlation test
Portrait of Artur Ekert
. The Royal Society (required attribution); Commons author field: Duncan.Hull; existing crop by Ravenpuff. CC BY-SA 3.0, via Wikimedia Commons. Source..jpg){kind=link}