Implementing a device-independent approach improves localization against unentangled adversaries, suggesting a breakthrough in quantum measurements.
We propose and implement a device-independent protocol for quantum position verification against unentangled adversaries. Our experiment achieves provable localization to a 1-dimensional region that is 40 . 7(7) % the size of the smallest theoretical region achievable with classical protocols.
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Kavuri et al. (2025) studied this question.
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