IBM Scientist Charles Bennett Wins 2025 Turing Award for Quantum Cryptography Work
By
rbanffy
2mo ago· 5 min readenNews
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Summary
The article tells the story of how IBM scientist Charles H. Bennett approached Gilles Brassard while swimming in Puerto Rico in 1979 to share his idea for quantum cryptography. This chance encounter led to their collaboration on quantum key distribution, which became the only practical method for sharing encryption keys with guaranteed security. Decades later, this foundational work earned them the 2025 Turing Award, computing's highest honor equivalent to a Nobel Prize in computing.
Key quotes
· 4 pulledOne afternoon in October 1979, Gilles Brassard was swimming outside a beachfront hotel in San Juan, Puerto Rico, when a stranger swam up to him and changed the course of his career.
Without so much as an introduction, the man began describing a way to create currency that could not be forged, based on the laws of quantum physics.
The stranger was Charles H. Bennett, a physicist from IBM Research. The idea he pitched in that ocean would eventually become the only practical method for sharing encryption keys with security guaranteed by the laws of physics.
What started as a conversation on the beach between two scientists led to the 'Nobel Prize in computing' decades later.
What started as a conversation on the beach between two scientists led to the “Nobel Prize in computing“ decades later. More on Charles Bennet, co-recipient of the 2025 Turing Award.
