Verification of Bell nonlocality by violating quantum monogamy relations

Quantum nonlocality as a witness of entanglement plays a crucial role in various fields. Existing quantum monogamy relations rule out the possibility of simultaneous violations of any Bell inequalities with partial statistics generated from one Bell experiment on any multipartite entanglement or post-quantum source. In this article, we report an efficient method to construct a multipartite Bell test based on any Bell inequalities. We demonstrate that violating these monogamy relations can dynamically witness simultaneous Bell nonlocalities of partial systems. We conduct a tripartite experiment to verify quantum nonlocalities by violating a tripartite monogamy relation using a maximally entangled two-photon state. [Display omitted] •Generalized quantum monogamy relation is proposed•Quantum nonlocality is witnessed by violating monogamy relation•Two-photon experiments are implemented to verify nonlocality Traditional tests of quantum nonlocality rely on the violation of Bell inequalities using static sources. This study introduces a dynamic Bell model based on a generalized quantum monogamy relation, which is validated through two-photon experiments.