A multipartite device-independent QKD protocol generates shared keys directly from measurement settings certified by maximal violation of the Hardy paradox, achieving positive key rates and higher pairwise rates.
Adhikary, Self-testing of genuine multipartite non-local and non-maximally entangled states, Physics Letters A520,129731 (2024)
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Multipartite Hardy paradox unlocks device-independent key sharing
A multipartite device-independent QKD protocol generates shared keys directly from measurement settings certified by maximal violation of the Hardy paradox, achieving positive key rates and higher pairwise rates.