RT Journal Article
T1 Genuine multipartite nonlocality is intrinsic to quantum networks
A1 Contreras Tejada, Patricia
A1 Palazuelos, Carlos
A1 Vicente Majua, Julio Íñigo de
AB Quantum entanglement and nonlocality are inextricably linked. However, while entanglement is necessary for nonlocality, it is not always sufficient in the standard Bell scenario. We derive sufficient conditions for entanglement to give rise to genuine multipartite nonlocality in networks. We find that any network where the parties are connected by bipartite pure entangled states is genuine multipartite nonlocal, independently of the amount of entanglement in the shared states and of the topology of the network. As an application of this result, we also show that all pure genuine multipartite entangled states are genuine multipartite nonlocal in the sense that measurements can be found on finitely many copies of any genuine multipartite entangled state to yield a genuine multipartite nonlocal behavior. Our results pave the way toward feasible manners of generating genuine multipartite nonlocality using any connected network.
PB American Physical Society
SN 0031-9007
YR 2021
FD 2021-01-29
LK https://hdl.handle.net/10016/36264
UL https://hdl.handle.net/10016/36264
LA eng
NO The authors thank Aleksander M. Kubicki and Elie Wolfe for enlightening discussions. This research was funded by the Spanish MINECO through Grant No. MTM2017-88385-P and by the Comunidad de Madrid through Grant No. QUITEMAD-CMS2018/TCS4342. We also acknowledge funding from the Spanish MINECO, through the "Severo Ochoa Programme for Centres of Excellence in R&D" SEV-2015-0554 and from the Spanish National Research Council, through the "Ayuda extraordinaria a Centros de Excelencia Severo Ochoa" 20205CEX001 (P. C.-T. and C. P.) and the Spanish MINECO Grant No. MTM2017-84098-P (J. I. d. V.). P. C.-T. is grateful for the hospitality of Perimeter Institute where part of this work was carried out. Research at Perimeter Institute is supported in part by the Government of Canada through the Department of Innovation, Science and Economic Development Canada and by the Province of Ontario through the Ministry of Economic Development, Job Creation and Trade.
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