Operational protocols cannot certify classicality
Quantum Physics
2025-10-10 v1
Abstract
The existence and practical utility of operational protocols that certify entanglement raises the question of whether operational protocols exist that certify the absence of entanglement, i.e. that certify separability. We show, within a purely topological, interpretation-independent representation, that such protocols do not exist. Classicality is therefore, as Bohr suggested, purely a pragmatic notion.
Cite
@article{arxiv.2510.08239,
title = {Operational protocols cannot certify classicality},
author = {Chris Fields and James F. Glazebrook and Antonino Marcianò and Emanuele Zappala},
journal= {arXiv preprint arXiv:2510.08239},
year = {2025}
}
Comments
14 pages