COLLOQUIUM: Cyber-security in a quantum world (December 2018)
iSpeech.org
Speaker: Hoi-Kwong Lo, University of Toronto
Abstract:
Quantum key distribution (QKD), promises in principle information-theoretic security based on the laws of physics, thus achieving the Holy Grail of communication security. Unfortunately, a practical QKD system rarely conforms to the idealized assumptions in security proofs. So, is QKD really secure in practice? Here, I survey the assumptions behind the security proofs of QKD and discuss about research efforts on quantum hacking and counter-measures about it. In particular, measurement-device-independent quantum key distribution (MDI-QKD) can automatically remove all side channel attacks on detectors, thus allowing the construction of QKD networks with *untrusted* relays. Recent results on MDI-QKD with asymmetric channel losses and twin-field (TF) type QKD protocols will also be discussed.
2018-12-21 02:27:19
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