2021
DOI: 10.48550/arxiv.2112.13612
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Significant-loophole-free test of Kochen-Specker contextuality using two species of atomic-ions

Pengfei Wang,
Junhua Zhang,
Chun-Yang Luan
et al.

Abstract: Quantum measurements cannot be thought of as revealing preexisting results, even when they do not disturb any other measurement in the same trial. This feature is called contextuality and is crucial for the quantum advantage in computing. Here, we report the first observation of quantum contextuality simultaneously free of the detection, sharpness and compatibility loopholes. The detection and sharpness loopholes are closed by adopting a hybrid two-ion system and highly efficient fluorescence measurements offe… Show more

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