dorsal/arxiv
View SchemaSurpassing the standard quantum limit for optical imaging using non-classical multimode light
| Authors | N. Treps, U. Andersen, B. Buchler, P. K. Lam, A. Maitre, H. -A. Bachor, C. Fabre |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0204017 |
| URL | https://arxiv.org/abs/quant-ph/0204017 |
| DOI | 10.1103/PhysRevLett.88.203601 |
| Journal | Phys. Rev. Lett. 88, 203601 (2002) |
Abstract
Using continuous wave superposition of spatial modes, we demonstrate experimentally displacement measurement of a light beam below the standard quantum limit. Multimode squeezed light is obtained by mixing a vacuum squeezed beam and a coherent beam that are spatially orthogonal. Although the resultant beam is not squeezed, it is shown to have strong internal spatial correlations. We show that the position of such a light beam can be measured using a split detector with an increased precision compared to a classical beam. This method can be used to improve the sensitivity of small displacement measurements.
{
"annotation_id": "77a95e2e-d6a5-4979-abdb-829e1f794c80",
"date_created": "2026-03-02T18:01:48.945000Z",
"date_modified": "2026-03-02T18:01:48.945000Z",
"file_hash": "039a86a5cd3c9f7d73ac87fbddb1c9ebeb05104588f15c3178ea16daebb754ce",
"private": false,
"record": {
"abstract": "Using continuous wave superposition of spatial modes, we demonstrate\nexperimentally displacement measurement of a light beam below the standard\nquantum limit. Multimode squeezed light is obtained by mixing a vacuum squeezed\nbeam and a coherent beam that are spatially orthogonal. Although the resultant\nbeam is not squeezed, it is shown to have strong internal spatial correlations.\nWe show that the position of such a light beam can be measured using a split\ndetector with an increased precision compared to a classical beam. This method\ncan be used to improve the sensitivity of small displacement measurements.",
"arxiv_id": "quant-ph/0204017",
"authors": [
"N. Treps",
"U. Andersen",
"B. Buchler",
"P. K. Lam",
"A. Maitre",
"H. -A. Bachor",
"C. Fabre"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.88.203601",
"journal_ref": "Phys. Rev. Lett. 88, 203601 (2002)",
"title": "Surpassing the standard quantum limit for optical imaging using non-classical multimode light",
"url": "https://arxiv.org/abs/quant-ph/0204017"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "085f337a-5da5-4a4d-a191-54a78d3a8862",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}