Light-Cone Structure of Propagation of Entanglement
Quantum Physics
2026-05-01 v1 Mathematical Physics
Functional Analysis
math.MP
Abstract
For a wide class of bipartite systems with localized couplings, we establish existence of an effective light-cone for propagation of entanglement. This result yields a hard lower bound on the time it takes, under ideal conditions (no loss, no decoherence), to transport entanglement to a distant location (say, a node of a graph-structured quantum network), or to maintain it there.
Cite
@article{arxiv.2604.27170,
title = {Light-Cone Structure of Propagation of Entanglement},
author = {Israel Michael Sigal},
journal= {arXiv preprint arXiv:2604.27170},
year = {2026}
}