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arXiv · 2103.01662

Device-independent quantum authorization based on the Clauser-Horne-Shimony-Holt game

Ricardo Faleiro·Manuel Goulão
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Abstract

In the spirit of device-independent cryptography, we present a two-party quantum authorization primitive with non-locality as its fueling resource. Therein, users are attributed authorization levels granting them access to a private database accordingly. The authorization levels are encoded in the non-local resources distributed to the users, and subsequently confirmed by their ability to win CHSH games using such resources. We formalize the protocol, prove its security, and frame it in the device-independent setting employing the notion of CHSH self-testing via simulation. Finally, we provide a proof-of-concept implementation using the Qiskit open-source framework.

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Ricardo Faleiro, Manuel Goulão. 2021-03-02. Device-independent quantum authorization based on the Clauser-Horne-Shimony-Holt game. https://doi.org/10.1103/physreva.103.022430

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