dorsal/arxiv
View SchemaLocal extraction of EPR entanglement from classical systems
| Authors | D. Kaszlikowski, V. Vedral |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606238 |
| URL | https://arxiv.org/abs/quant-ph/0606238 |
Abstract
Coherent states with large amplitudes are traditionally thought of as the best quantum mechanical approximation of classical behavior. Here we argue that, far from being classical, coherent state are in fact highly entangled. We demonstrate this by showing that a general system of indistinguishable bosons in a coherent state can be used to entangle, by local interactions, two spatially separated and distinguishable non-interacting quantum systems. Entanglement can also be extracted in the same way from number states or any other nontrivial superpositions of them.
{
"annotation_id": "e66df518-f07d-418b-93da-45f942031e2d",
"date_created": "2026-03-02T18:02:27.177000Z",
"date_modified": "2026-03-02T18:02:27.177000Z",
"file_hash": "6f8dfe78a5151482afcf4f3d0daf272087f84a29b5b1cdd203dd6e48c793ce30",
"private": false,
"record": {
"abstract": "Coherent states with large amplitudes are traditionally thought of as the\nbest quantum mechanical approximation of classical behavior. Here we argue\nthat, far from being classical, coherent state are in fact highly entangled. We\ndemonstrate this by showing that a general system of indistinguishable bosons\nin a coherent state can be used to entangle, by local interactions, two\nspatially separated and distinguishable non-interacting quantum systems.\nEntanglement can also be extracted in the same way from number states or any\nother nontrivial superpositions of them.",
"arxiv_id": "quant-ph/0606238",
"authors": [
"D. Kaszlikowski",
"V. Vedral"
],
"categories": [
"quant-ph"
],
"title": "Local extraction of EPR entanglement from classical systems",
"url": "https://arxiv.org/abs/quant-ph/0606238"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "c53822ec-87fc-4a1d-85e8-22304c5a33c2",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}