dorsal/arxiv
View SchemaDynamical decoherence in a cavity with a large number of two-level atoms
| Authors | Marco Frasca |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310117 |
| URL | https://arxiv.org/abs/quant-ph/0310117 |
| DOI | 10.1088/0953-4075/37/6/011 |
| Journal | J. Phys. B: At. Mol. Opt. Phys. 37 (2004) 1273-1278 |
Abstract
We consider a large number of two-level atoms interacting with the mode of a cavity in the rotating-wave approximation (Tavis-Cummings model). We apply the Holstein-Primakoff transformation to study the model in the limit of the number of two-level atoms, all in their ground state, becoming very large. The unitary evolution that we obtain in this approximation is applied to a macroscopic superposition state showing that, when the coherent states forming the superposition are enough distant, then the state collapses on a single coherent state describing a classical radiation mode. This appear as a true dynamical effect that could be observed in experiments with cavities.
{
"annotation_id": "a33c8c05-da6f-4e5a-b450-7083fff336c9",
"date_created": "2026-03-02T18:02:03.345000Z",
"date_modified": "2026-03-02T18:02:03.345000Z",
"file_hash": "3a019c5082fce70af34614827a04145dd92cad9795411804578fbdcf0410dc1c",
"private": false,
"record": {
"abstract": "We consider a large number of two-level atoms interacting with the mode of a\ncavity in the rotating-wave approximation (Tavis-Cummings model). We apply the\nHolstein-Primakoff transformation to study the model in the limit of the number\nof two-level atoms, all in their ground state, becoming very large. The unitary\nevolution that we obtain in this approximation is applied to a macroscopic\nsuperposition state showing that, when the coherent states forming the\nsuperposition are enough distant, then the state collapses on a single coherent\nstate describing a classical radiation mode. This appear as a true dynamical\neffect that could be observed in experiments with cavities.",
"arxiv_id": "quant-ph/0310117",
"authors": [
"Marco Frasca"
],
"categories": [
"quant-ph",
"cond-mat.other",
"physics.atom-ph"
],
"doi": "10.1088/0953-4075/37/6/011",
"journal_ref": "J. Phys. B: At. Mol. Opt. Phys. 37 (2004) 1273-1278",
"title": "Dynamical decoherence in a cavity with a large number of two-level atoms",
"url": "https://arxiv.org/abs/quant-ph/0310117"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "7af845d5-8e98-4b80-9687-de5dfcebf2f5",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}