General no-go theorem for entanglement extraction
Abstract
We study under what circumstances a separable bipartite system A-B can or cannot become entangled through local interactions with a bi-local entangled source -. We obtain constraints on the general forms of the interaction Hamiltonians coupling A with and B with necessary for A and B to become entangled. We are able to generalize and provide non-perturbative insight on several previous no-go theorems of entanglement harvesting from quantum fields using these general results. We also discuss the role of communication in the process of entanglement extraction, establishing a distinction between genuine entanglement extraction and communication-assisted entanglement generation.
Cite
@article{arxiv.1803.11214,
title = {General no-go theorem for entanglement extraction},
author = {Petar Simidzija and Robert H. Jonsson and Eduardo Martin-Martinez},
journal= {arXiv preprint arXiv:1803.11214},
year = {2022}
}
Comments
16 pages, 5 Figures, two appendices. RevTeX 4.1. Minor typos fixed