dorsal/arxiv
View SchemaRadio-frequency dressed state potentials for neutral atoms
| Authors | S. Hofferberth, I. Lesanovsky, B. Fischer, J. Verdu, J. Schmiedmayer |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608228 |
| URL | https://arxiv.org/abs/quant-ph/0608228 |
| DOI | 10.1038/nphys420 |
| Journal | Nature Physics, 2, 710 - 716 (2006) |
Abstract
Potentials for atoms can be created by external fields acting on properties like magnetic moment, charge, polarizability, or by oscillating fields which couple internal states. The most prominent realization of the latter is the optical dipole potential formed by coupling ground and electronically excited states of an atom with light. Here we present an experimental investigation of the remarkable properties of potentials derived from radio-frequency (RF) coupling between electronic ground states. The coupling is magnetic and the vector character allows to design state dependent potential landscapes. On atom chips this enables robust coherent atom manipulation on much smaller spatial scales than possible with static fields alone. We find no additional heating or collisional loss up to densities approaching $10^{15}$ atoms / cm$^3$ compared to static magnetic traps. We demonstrate the creation of Bose-Einstein condensates in RF potentials and investigate the difference in the interference between two independently created and two coherently split condensates in identical traps. All together this makes RF dressing a powerful new tool for micro manipulation of atomic and molecular systems.
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"abstract": "Potentials for atoms can be created by external fields acting on properties\nlike magnetic moment, charge, polarizability, or by oscillating fields which\ncouple internal states. The most prominent realization of the latter is the\noptical dipole potential formed by coupling ground and electronically excited\nstates of an atom with light. Here we present an experimental investigation of\nthe remarkable properties of potentials derived from radio-frequency (RF)\ncoupling between electronic ground states. The coupling is magnetic and the\nvector character allows to design state dependent potential landscapes. On atom\nchips this enables robust coherent atom manipulation on much smaller spatial\nscales than possible with static fields alone. We find no additional heating or\ncollisional loss up to densities approaching $10^{15}$ atoms / cm$^3$ compared\nto static magnetic traps. We demonstrate the creation of Bose-Einstein\ncondensates in RF potentials and investigate the difference in the interference\nbetween two independently created and two coherently split condensates in\nidentical traps. All together this makes RF dressing a powerful new tool for\nmicro manipulation of atomic and molecular systems.",
"arxiv_id": "quant-ph/0608228",
"authors": [
"S. Hofferberth",
"I. Lesanovsky",
"B. Fischer",
"J. Verdu",
"J. Schmiedmayer"
],
"categories": [
"quant-ph"
],
"doi": "10.1038/nphys420",
"journal_ref": "Nature Physics, 2, 710 - 716 (2006)",
"title": "Radio-frequency dressed state potentials for neutral atoms",
"url": "https://arxiv.org/abs/quant-ph/0608228"
},
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