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Beginning in the 1980's Bennett and collaborators helped establish quantum information as the natural arena within which to formalize notions of communication and computation, leaving the classical theories of Turing and Shannon as interesting and useful special cases. In 1984, with Gilles Brassard of the University of Montréal, building on the seminal insights of Stephen Wiesner, he developed a practical system of quantum cryptography, allowing secure communication between parties who share no secret information initially, with security based on the laws of quantum mechnaics instead of usual computational assumptions such as the difficulty of factoring, and with the help of their students built a working demonstration of it in 1989. In 1993 Bennett and Brassard, in collaboration with Claude Crépeau, Richard Jozsa, Asher Peres, and William Wootters, discovered "quantum teleportation," an effect in which the complete information in an unknown quantum state is decomposed into purely classical information and purely non-classical entanglement, sent through two separate channels, and later reassembled in a new location to produce an exact replica of the original quantum state that was destroyed in the sending process. This and other protocols for entanglement-assisted communications showed that entanglement is a useful, quantifiable resource despite having no communications ability by itself. In 1995-7, working with Smolin, Wootters, David DiVincenzo, and other collaborators, he devised several techniques for faithful transmission of classical and quantum information through noisy channels. With Devetak, Harrow, Shor, Smolin, Thapliyal and Winter, in 2002 and 2014, he proved the classical and quantum reverse Shannon theorems, showing that all classical (resp. quantum) channels of equal capacity (resp. entanglement-assisted capacity) can efficiently simulate another in the presence of shared randomness (resp. enganglement).
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De Gruyter eBookspp.116-135, (2023)
semanticscholar(2020)
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Emerging Syntheses in Sciencepp.215-233, (2018)
EINSTEIN, TAGORE AND THE NATURE OF REALITY (2017)
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Between Quantum and Cosmospp.605-613, (2017)
Natural Computingno. 4 (2014): 453-458
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