dorsal/arxiv
View SchemaDouble-EIT ground-state laser cooling without blue-sideband heating
| Authors | Joerg Evers, Christoph H. Keitel |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0406204 |
| URL | https://arxiv.org/abs/quant-ph/0406204 |
| DOI | 10.1209/epl/i2004-10207-5 |
| Journal | Europhys. Lett. 68, 370 (2004) |
Abstract
We discuss a laser cooling scheme for trapped atoms or ions which is based on double electromagnetically induced transparency (EIT) and makes use of a four-level atom in tripod configuration. The additional fourth atomic state is coupled by a strong coupling laser field to the usual three-level setup of single-EIT cooling. This effectively allows to create two EIT structures in the absorption spectrum of the system to be cooled, which may be controlled by the coupling laser field parameters to cancel both the carrier- and the blue-sideband excitations. In leading order of the Lamb-Dicke expansion, this suppresses all heating processes. As a consequence, the double-EIT scheme can be used to lower the cooling limit by almost two powers of the Lamb-Dicke parameter as compared to single-EIT cooling.
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"abstract": "We discuss a laser cooling scheme for trapped atoms or ions which is based on\ndouble electromagnetically induced transparency (EIT) and makes use of a\nfour-level atom in tripod configuration. The additional fourth atomic state is\ncoupled by a strong coupling laser field to the usual three-level setup of\nsingle-EIT cooling. This effectively allows to create two EIT structures in the\nabsorption spectrum of the system to be cooled, which may be controlled by the\ncoupling laser field parameters to cancel both the carrier- and the\nblue-sideband excitations. In leading order of the Lamb-Dicke expansion, this\nsuppresses all heating processes. As a consequence, the double-EIT scheme can\nbe used to lower the cooling limit by almost two powers of the Lamb-Dicke\nparameter as compared to single-EIT cooling.",
"arxiv_id": "quant-ph/0406204",
"authors": [
"Joerg Evers",
"Christoph H. Keitel"
],
"categories": [
"quant-ph"
],
"doi": "10.1209/epl/i2004-10207-5",
"journal_ref": "Europhys. Lett. 68, 370 (2004)",
"title": "Double-EIT ground-state laser cooling without blue-sideband heating",
"url": "https://arxiv.org/abs/quant-ph/0406204"
},
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