Catalytic Activation of Genuine Multipartite Entanglement and Nonlocality
Abstract
We demonstrate the possibility to activate genuine multipartite entanglement (GME), the strongest form of entanglement for multipartite states, within the framework of quantum catalysis. Specifically, we show that any biseparable state (i.e. not GME) that is not partition separable can be deterministically transformed into a GME state via the help of a catalyst and local operations, without any classical communication. In turn, we construct a catalytic protocol tailored to the multipartite case. The protocol is termed "sum-to-product", as it transforms a mixture of states into their tensor product in a heralded manner. We apply this protocol to random network entangled states, which are biseparable by construction, and demonstrate catalytic activation of both GME and genuine multipartite Bell nonlocality.
Related
- Multi-copy and Catalytic Superactivation of Genuine Multipartite Nonlocality
- Noise robust self testing from genuine local operation shared randomness multipartite nonlocality Tests
- Genuine Multipartite Nonlocality Is Fermionic Magic
- Genuine multipartite nonlocality detection in graph states
- Minimal Scenarios Witnessing Genuine Multipartite Nonlocality Possibilistically
BibTeX
@misc{donnadieu2026catalytic,
title = {{Catalytic Activation of Genuine Multipartite Entanglement and Nonlocality}},
author = {Eliot Donnadieu and Pavel Sekatski and Nicolas Brunner and Victor Barizien},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.18570},
eprint = {2609.18570},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.18570},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Catalytic Activation of Genuine Multipartite Entanglement and Nonlocality
AU - Eliot Donnadieu
AU - Pavel Sekatski
AU - Nicolas Brunner
AU - Victor Barizien
PY - 2026
DA - 2026/09/16
PB - arXiv
DO - 10.48550/arxiv.2609.18570
UR - https://arxiv.org/abs/2609.18570
AB - We demonstrate the possibility to activate genuine multipartite entanglement (GME), the strongest form of entanglement for multipartite states, within the framework of quantum catalysis. Specifically, we show that any biseparable state (i.e. not GME) that is not partition separable can be deterministically transformed into a GME state via the help of a catalyst and local operations, without any classical communication. In turn, we construct a catalytic protocol tailored to the multipartite case. The protocol is termed "sum-to-product", as it transforms a mixture of states into their tensor product in a heralded manner. We apply this protocol to random network entangled states, which are biseparable by construction, and demonstrate catalytic activation of both GME and genuine multipartite Bell nonlocality.
ER -