dorsal/arxiv
View SchemaA new determination of the fine structure constant based on Bloch oscillations of ultracold atoms in a vertical optical lattic
| Authors | Pierre Cladé, Estefania De Mirandes, Malo Cadoret, Saïda Guellati-Khélifa, Catherine Schwob, François Nez, Lucile Julien, François Biraben |
|---|---|
| Categories | |
| ArXiv ID | physics/0510101 |
| URL | https://arxiv.org/abs/physics/0510101 |
| DOI | 10.1103/PhysRevLett.96.033001 |
| Journal | Physical Review Letters 96 (2006) 033001 |
Abstract
We report an accurate measurement of the recoil velocity of Rb atoms based on Bloch oscillations in a vertical accelerated optical lattice. We transfer about 900 recoil momenta with an efficiency of 99.97 % per recoil. A set of 72 measurements of the recoil velocity, each one with a relative uncertainty of about 33 ppb in 20 min integration time, leads to a determination of the fine structure constant alpha with a statistical relative uncertainty of 4.4 ppb. The detailed analysis of the different systematic errors yields to a relative uncertainty of 6.7 ppb. The deduced value of 1/alpha is 137.03599878(91).
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"abstract": "We report an accurate measurement of the recoil velocity of Rb atoms based on\nBloch oscillations in a vertical accelerated optical lattice. We transfer about\n900 recoil momenta with an efficiency of 99.97 % per recoil. A set of 72\nmeasurements of the recoil velocity, each one with a relative uncertainty of\nabout 33 ppb in 20 min integration time, leads to a determination of the fine\nstructure constant alpha with a statistical relative uncertainty of 4.4 ppb.\nThe detailed analysis of the different systematic errors yields to a relative\nuncertainty of 6.7 ppb. The deduced value of 1/alpha is 137.03599878(91).",
"arxiv_id": "physics/0510101",
"authors": [
"Pierre Clad\u00e9",
"Estefania De Mirandes",
"Malo Cadoret",
"Sa\u00efda Guellati-Kh\u00e9lifa",
"Catherine Schwob",
"Fran\u00e7ois Nez",
"Lucile Julien",
"Fran\u00e7ois Biraben"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevLett.96.033001",
"journal_ref": "Physical Review Letters 96 (2006) 033001",
"title": "A new determination of the fine structure constant based on Bloch oscillations of ultracold atoms in a vertical optical lattic",
"url": "https://arxiv.org/abs/physics/0510101"
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