dorsal/arxiv
View SchemaExperimental Proof of Quantum Nonlocality without Squeezing
| Authors | J. Niset, A. Acin, U. L. Andersen, N. J. Cerf, R. García-Patrón, M. Navascues, M. Sabuncu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608215 |
| URL | https://arxiv.org/abs/quant-ph/0608215 |
| DOI | 10.1103/PhysRevLett.98.260404 |
| Journal | Phys. Rev. Lett. 98, 260404 (2007) |
Abstract
It is shown that the ensemble $\{p (\alpha),|\alpha>|\alpha^*>\}$ where $p (\alpha)$ is a Gaussian distribution of finite variance and $| \alpha>$ is a coherent state can be better discriminated with an entangled measurement than with any local strategy supplemented by classical communication. Although this ensemble consists of products of quasi-classical states, it exhibits some quantum nonlocality. This remarkable effect is demonstrated experimentally by implementing the optimal local strategy together with a joint nonlocal strategy that yields a higher fidelity.
{
"annotation_id": "29a1a21f-0eed-4f08-a1d0-2fb3f689d926",
"date_created": "2026-03-02T18:02:29.950000Z",
"date_modified": "2026-03-02T18:02:29.950000Z",
"file_hash": "cec88646cdbaae974bb820f2e7854803ed91a9373e99520133156343b4b938d4",
"private": false,
"record": {
"abstract": "It is shown that the ensemble $\\{p (\\alpha),|\\alpha\u003e|\\alpha^*\u003e\\}$ where $p\n(\\alpha)$ is a Gaussian distribution of finite variance and $| \\alpha\u003e$ is a\ncoherent state can be better discriminated with an entangled measurement than\nwith any local strategy supplemented by classical communication. Although this\nensemble consists of products of quasi-classical states, it exhibits some\nquantum nonlocality. This remarkable effect is demonstrated experimentally by\nimplementing the optimal local strategy together with a joint nonlocal strategy\nthat yields a higher fidelity.",
"arxiv_id": "quant-ph/0608215",
"authors": [
"J. Niset",
"A. Acin",
"U. L. Andersen",
"N. J. Cerf",
"R. Garc\u00eda-Patr\u00f3n",
"M. Navascues",
"M. Sabuncu"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.98.260404",
"journal_ref": "Phys. Rev. Lett. 98, 260404 (2007)",
"title": "Experimental Proof of Quantum Nonlocality without Squeezing",
"url": "https://arxiv.org/abs/quant-ph/0608215"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "0fdae023-b142-4957-bd76-934dda3501be",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}