Adrian Kent is a British theoretical physicist, Professor of Quantum Physics at the University of Cambridge, member of the Centre for Quantum Information and Foundations, and Distinguished Visiting Research Chair at the Perimeter Institute for Theoretical Physics.
[6][7] In 2005 he published with Lucien Hardy and Jonathan Barrett the first security proof of quantum key distribution based on the no-signalling principle.
[8] Kent's early contributions to physics were on topics related to conformal field theory.
[10] Kent is inventor of the field of relativistic quantum cryptography, where security of the cryptographic tasks is guaranteed from the properties of quantum information and from the relativistic physical principle stating that information cannot travel faster than the speed of light (no-signalling).
[6][7] He published with Lucien Hardy and Jonathan Barrett the first security proof for quantum key distribution based on the no-signalling principle, where two parties can generate a secure secret key even if their devices are not trusted and they are not described by quantum theory, as long as they satisfy the no-signalling principle.