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cs.CR2022
Beware of Greeks bearing entanglement? Quantum covert channels, information flow and non-local games
David Mestel
Can quantum entanglement increase the capacity of (classical) covert channels? To one familiar with Holevo's Theorem it is tempting to think that the answer is obviously no. Howeve…
cs.CR2020
Robust ambiguity for contact tracing
David Mestel
A known drawback of `decentralised' contact tracing architectures is that users who have been in contact with an infected person are able to precisely identify the relevant contact…