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2021 0708 NUS researchers bring attack-proof quantum communication two steps forward Assistant Professor Charles Lim (back) and Dr Zhang Gong (front) with their team’s first-of-its-kind quantum power limiter device. Quantum key distribution (QKD) is a method for secure communication that uses quantum mechanics to encrypt information. While the security of QKD is unbreakable in principle, if it is incorrectly implemented, vital information could still be stolen by attackers. These are known as side-channel attacks, where the attackers exploit weaknesses in the setup of the information system to eavesdrop on the exchange of secret keys. Researchers from the National University of Singapore (NUS) have developed two methods, one theoretical and one experimental, to ensure that QKD communications cannot be attacked in this way. The first is an ultra-secure cryptography protocol that can be deployed in any communication network that needs long-term security. The second is a first-of-i

Valerio scaraniNature communicationsCentre for quantum technologiesNational university of singaporeDepartment of physicsDepartment of electricalAssistant professor charles limNational universityComputer engineeringQuantum technologiesProfessor valerio scaraniAsst profProf limஇயற்கை தகவல்தொடர்புகள்மையம் க்கு குவாண்டம் தொழில்நுட்பங்கள்தேசிய பல்கலைக்கழகம் ஆஃப் சிங்கப்பூர்