dorsal/arxiv
View SchemaSaturation of fidelity in the atom-optics kicked rotor
| Authors | Sandro Wimberger, Andreas Buchleitner |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603095 |
| URL | https://arxiv.org/abs/quant-ph/0603095 |
| DOI | 10.1088/0953-4075/39/7/L01 |
| Journal | J. Phys. B: At. Mol. Opt. Phys. 39, L145-L151 (2006) |
Abstract
We show that the quantum fidelity is accessible to cold atom experiments for a large class of evolutions in periodical potentials, properly taking into account the experimental initial conditions of the atomic ensemble. We prove analytically that, at the fundamental quantum resonances of the atom-optics kicked rotor, the fidelity saturates at a constant, time-independent value after a small number of kicks. The latter saturation arises from the bulk of the atomic ensemble, whilst for the resonantly accelerated atoms the fidelity is predicted to decay slowly according to a power law.
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"abstract": "We show that the quantum fidelity is accessible to cold atom experiments for\na large class of evolutions in periodical potentials, properly taking into\naccount the experimental initial conditions of the atomic ensemble. We prove\nanalytically that, at the fundamental quantum resonances of the atom-optics\nkicked rotor, the fidelity saturates at a constant, time-independent value\nafter a small number of kicks. The latter saturation arises from the bulk of\nthe atomic ensemble, whilst for the resonantly accelerated atoms the fidelity\nis predicted to decay slowly according to a power law.",
"arxiv_id": "quant-ph/0603095",
"authors": [
"Sandro Wimberger",
"Andreas Buchleitner"
],
"categories": [
"quant-ph",
"cond-mat.soft",
"nlin.SI"
],
"doi": "10.1088/0953-4075/39/7/L01",
"journal_ref": "J. Phys. B: At. Mol. Opt. Phys. 39, L145-L151 (2006)",
"title": "Saturation of fidelity in the atom-optics kicked rotor",
"url": "https://arxiv.org/abs/quant-ph/0603095"
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