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quant-ph2021
Beating Classical Impossibility of Position Verification
Jiahui Liu, Qipeng Liu, Luowen Qian
Chandran et al. (SIAM J. Comput.'14) formally introduced the cryptographic task of position verification, where they also showed that it cannot be achieved by classical protocols.…
cs.CR2021
Hidden Cosets and Applications to Unclonable Cryptography
Andrea Coladangelo, Jiahui Liu, Qipeng Liu +1
In this work, we study a generalization of hidden subspace states to hidden coset states (first introduced by Aaronson and Christiano [STOC '12]). This notion was considered indepe…