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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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Contributor : Anthony Leverrier Connect in order to contact the contributor
Submitted on : Wednesday, December 2, 2015 - 11:05:14 PM
Last modification on : Tuesday, October 25, 2022 - 4:18:45 PM

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Kaushik Chakraborty, Anthony Leverrier. Practical Position-Based Quantum Cryptography. Physical Review A : Atomic, molecular, and optical physics, 2015, 92 (5), ⟨10.1103/PhysRevA.92.052304⟩. ⟨hal-01237233⟩



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