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arXiv · 1507.00626

Practical Position-Based Quantum Cryptography

Kaushik Chakraborty·Anthony Leverrier
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Abstract

We study a general family of quantum protocols for position verification and present a new 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 new 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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Kaushik Chakraborty, Anthony Leverrier. 2015-10-06. Practical Position-Based Quantum Cryptography. https://doi.org/10.1103/physreva.92.052304

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