Trending Now - Turing Award Recognizes Groundbreaking Advances in Quantum Encryption
WHO:
Charles Bennett is a physicist at IBM Research in Yorktown Heights, New York.
Gilles Brassard is a computer scientist at the University of Montreal in Canada.
The Association for Computing Machinery announced the award in New York City.
Wiesner, who abandoned physics research in the early 1970s and later became a construction worker in Israel, died in 2021.
Scott Aaronson, a member of Quanta Magazine’s advisory board.
Charles Bennett and Gilles Brassard, pioneers in quantum information theory.
Peter Shor, applied mathematician known for Shor's algorithm.
John Smolin, colleague of Bennett involved in experimental work.
WHAT:
Bennett and Brassard were awarded the A. M. Turing Award for their essential role in establishing the foundations of quantum information science and transforming secure communication and computing.
They will share a prize of US$1 million.
Bennett and Brassard's experimental demonstration of quantum key distribution was completed on October 9th, 1989, exactly 10 years after their first meeting.
Their initial experimental setup demonstrated quantum key distribution over a distance of 30 centimeters.
Recent demonstrations have successfully implemented their method over distances exceeding 1,000 kilometers.
Bennett and Brassard were awarded the Turing Award for their contributions to quantum cryptography.
They developed the BB84 protocol in 1983 for quantum key distribution.
Their experimental demonstration of quantum key distribution was successfully completed in October 1989.
The initial experiment demonstrated quantum key distribution over a distance of 30 centimeters.
Their work has led to recent demonstrations of quantum key distribution over distances exceeding 1,000 kilometers.
WHERE:
The initial meeting between Bennett and Brassard took place in Puerto Rico.
The experimental demonstration was conducted in an unspecified location, but involved purchasing materials from a fabric store.
WHEN:
The Turing Award was announced on March 18th, 2026.
The BB84 protocol was devised in 1983.
The experimental demonstration was completed in October 1989, exactly 10 years after Bennett and Brassard's first meeting.
Shor's algorithm was introduced in 1994.
WHY:
Bennett and Brassard's work initiated a whole field of technological development and contributed to researchers' understanding of the Universe.
Bennett and Brassard aimed to address the limitations of existing encryption schemes that required in-person meetings and relied on unproven mathematical assumptions.
Bennett and Brassard aimed to create a secure method of communication that did not require in-person meetings or reliance on unproven mathematical assumptions.
The development of quantum cryptography was motivated by the need for secure communication methods in light of advancements in quantum computing.
HOW:
Bennett and Brassard's quantum encryption key concept was developed in 1984, allowing the sender to share a key with the receiver in a stream of photons.
Bennett and Brassard combined Wiesner’s quantum money scheme with cryptographic techniques to create a more practical method for secure communication.
The BB84 protocol uses quantum measurement disturbance to ensure that any eavesdropping disrupts the transmission, alerting the sender and receiver.
Bennett and Brassard combined Wiesner's ideas with cryptographic techniques to address issues in quantum money schemes.
The experimental setup involved improvisation due to a lack of budget and experience, including the use of black velvet to block stray light.
(UPDATED March 18, 2026 19:24 UTC)
Today, the Association for Computing Machinery announced that Charles Bennett, a physicist at IBM Research, and Gilles Brassard, a computer scientist at the University of Montreal, have been awarded the prestigious A. M. Turing Award for their groundbreaking contributions to quantum information science. The two will share a prize of one million dollars for their pivotal work, which began with their development of a quantum encryption key concept in 1984, revolutionizing secure communication and computing. Their research has not only laid the foundation for a new field of technology but has also enhanced our understanding of the Universe.
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(UPDATED March 18, 2026 17:23 UTC)
In a significant advancement for secure communication, researchers Bennett and Brassard successfully demonstrated quantum key distribution on October 9, 1989, exactly ten years after they first met, using an initial setup that spanned just 30 centimeters. Their work built upon Wiesner's earlier quantum money scheme, aiming to overcome the limitations of existing encryption methods that relied on in-person meetings and unproven mathematical assumptions. Today, recent implementations of their technique have achieved remarkable distances, exceeding 1,000 kilometers, showcasing the potential of quantum communication.
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(UPDATED March 18, 2026 13:29 UTC)
Today, Charles Bennett and Gilles Brassard were awarded the Turing Award for their groundbreaking work in quantum cryptography, particularly for developing the BB84 protocol in 1983, which allows secure quantum key distribution. Their initial experimental demonstration, completed in October 1989, successfully showcased quantum key distribution over a distance of 30 centimeters, paving the way for recent advancements that have achieved distances exceeding 1,000 kilometers. Along with their colleague Peter Shor, known for Shor's algorithm, Bennett and Brassard's innovations address the critical need for secure communication in the face of evolving quantum computing technologies.