Practical Position-Based Quantum Cryptography

Abstract : We study a general family of quantum protocols for position verification and present a class of attacks based on the Clifford hierarchy. These attacks outperform current strategies based on port-based teleportation for a large class of practical protocols. We then introduce the interleaved product protocol, a scheme for position verification involving only the preparation and measurement of single qubit states for which the best available attacks have a complexity exponential in the number of classical bits transmitted.
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Physical Review A, American Physical Society, 2015, 92 (5), 〈10.1103/PhysRevA.92.052304〉
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https://hal.inria.fr/hal-01237233
Contributeur : Anthony Leverrier <>
Soumis le : mercredi 2 décembre 2015 - 23:05:14
Dernière modification le : vendredi 25 mai 2018 - 12:02:05

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Kaushik Chakraborty, Anthony Leverrier. Practical Position-Based Quantum Cryptography. Physical Review A, American Physical Society, 2015, 92 (5), 〈10.1103/PhysRevA.92.052304〉. 〈hal-01237233〉

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