Translating Bell nonlocality to prepare-and-measure scenarios under dimensional constraints
Phys. Rev. A 112, 062220 – Published 17 December, 2025
DOI: https://doi.org/10.1103/6k4f-p3bb
Abstract
Understanding the connections between different quantum information protocols has been proven fruitful for both theoretical insights and experimental applications. In this work, we investigate a specific link between nonlocal and prepare-and-measure scenarios, proposing a systematic way to translate bipartite Bell inequalities into dimensionally bounded prepare-and-measure tasks. We identify sufficient conditions under which the translation preserves the quantum bound and self-testing properties, enabling a wide range of certification protocols originally developed for the nonlocal setting to be adapted to the sequential framework of prepare-and-measure with a dimensional bound. While the dimensionality bound is not device independent, it still is a practical and experimentally reasonable assumption in many cases of interest. In some instances, we find new experimentally friendly certification protocols. In others, we demonstrate equivalences with already known prepare-and-measure protocols, where self-testing results were previously established using alternative mathematical methods. Our results unify different quantum correlation frameworks in specific scenarios and contribute to the ongoing research effort of studying the interplay between parallel and sequential protocols.
