dorsal/arxiv
View SchemaNonexponential decoherence and momentum subdiffusion in a quantum L\'evy kicked rotator
| Authors | Henning Schomerus, Eric Lutz |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0611162 |
| URL | https://arxiv.org/abs/quant-ph/0611162 |
| DOI | 10.1103/PhysRevLett.98.260401 |
| Journal | Phys. Rev. Lett. 98, 260401 (2007) |
Abstract
We investigate decoherence in the quantum kicked rotator (modelling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent (Levy noise). We demonstrate the existence of a regime of nonexponential decoherence where the notion of a decoherence rate is ill-defined. In this regime, dynamical localization is never fully destroyed, indicating that the dynamics of the quantum system never reaches the classical limit. We show that this leads to quantum subdiffusion of the momentum, which should be observable in an experiment.
{
"annotation_id": "978f2a2e-8b63-4e98-8acc-7dfc885d0f8e",
"date_created": "2026-03-02T18:02:31.272000Z",
"date_modified": "2026-03-02T18:02:31.272000Z",
"file_hash": "05f4d0e8d5a5111408955063910f5102a56717cee9674ee62db51f52cf0bc06d",
"private": false,
"record": {
"abstract": "We investigate decoherence in the quantum kicked rotator (modelling cold\natoms in a pulsed optical field) subjected to noise with power-law tail\nwaiting-time distributions of variable exponent (Levy noise). We demonstrate\nthe existence of a regime of nonexponential decoherence where the notion of a\ndecoherence rate is ill-defined. In this regime, dynamical localization is\nnever fully destroyed, indicating that the dynamics of the quantum system never\nreaches the classical limit. We show that this leads to quantum subdiffusion of\nthe momentum, which should be observable in an experiment.",
"arxiv_id": "quant-ph/0611162",
"authors": [
"Henning Schomerus",
"Eric Lutz"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall",
"nlin.CD"
],
"doi": "10.1103/PhysRevLett.98.260401",
"journal_ref": "Phys. Rev. Lett. 98, 260401 (2007)",
"title": "Nonexponential decoherence and momentum subdiffusion in a quantum L\\\u0027evy kicked rotator",
"url": "https://arxiv.org/abs/quant-ph/0611162"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3d1a8375-fe7f-4dca-8877-bcd2518a9b00",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}