English

General no-go theorem for entanglement extraction

Quantum Physics 2022-01-28 v2 General Relativity and Quantum Cosmology High Energy Physics - Theory

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 S1\text{S}_1-S2\text{S}_2. We obtain constraints on the general forms of the interaction Hamiltonians coupling A with S1\text{S}_1 and B with S2\text{S}_2 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.

Keywords

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

R2 v1 2026-06-23T01:09:10.818Z