Can every set of incompatible measurements lead to genuine multipartite steering?

Measurement incompatibility and bipartite quantum steering are known to display a strong connection: a set of measurements is incompatible if and only if it can lead to bipartite steering. Despite such a close link between these concepts in bipartite scenarios, little is known in the multipartite setting, where notions of genuine multipartite correlations play major roles. In this work we prove that, as in the bipartite case, incompatibility is also necessary and sufficient for genuine multipartite steering in any multipartite scenario with a single uncharacterised party. Interestingly, genuine multipartite steering can be extracted from any set of incompatible measurements using states which are not SLOCC equivalent, such as GHZ and W states. In contrast, we prove that this result does not hold in scenarios with more than one uncharacterised party, by presenting a set of incompatible measurements that can never lead to genuine multipartite steering in these cases. In order to obtain our main results, we introduce methods tailored for multipartite correlations, paving the way to understanding the role of measurement incompatibility beyond bipartite scenarios.

Authors

Publication Details

Journal
Physical Review Letters
Published
2026-10-27
DOI
https://doi.org/10.1103/qdtc-ff2z
Primary Topic
Quantum Information and Cryptography
Type
article
Field-Weighted Citation Impact
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article

Can every set of incompatible measurements lead to genuine multipartite steering?

Roope Uola, Lucas Tendick, Daniel Cavalcanti, Marco Túlio Quintino et al.
2 links
Physical Review Letters
Quantum Information and Cryptography
article

Can every set of incompatible measurements lead to genuine multipartite steering?

Roope Uola, Lucas Tendick, Daniel Cavalcanti, Marco Túlio Quintino, Lucas E. A. Porto
article en

Abstract

Measurement incompatibility and bipartite quantum steering are known to display a strong connection: a set of measurements is incompatible if and only if it can lead to bipartite steering. Despite such a close link between these concepts in bipartite scenarios, little is known in the multipartite setting, where notions of genuine multipartite correlations play major roles. In this work we prove that, as in the bipartite case, incompatibility is also necessary and sufficient for genuine multipartite steering in any multipartite scenario with a single uncharacterised party. Interestingly, genuine multipartite steering can be extracted from any set of incompatible measurements using states which are not SLOCC equivalent, such as GHZ and W states. In contrast, we prove that this result does not hold in scenarios with more than one uncharacterised party, by presenting a set of incompatible measurements that can never lead to genuine multipartite steering in these cases. In order to obtain our main results, we introduce methods tailored for multipartite correlations, paving the way to understanding the role of measurement incompatibility beyond bipartite scenarios.

Physical Review Letters
Openalex Percentile: Top 82%
Quantum Information and Cryptography
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Can every set of incompatible measurements lead to genuine multipartite steering? — Roope Uola, Lucas Tendick, et al. · Physical Review Letters (2026) | TGRS Research Map | TGRS