dorsal/arxiv
View SchemaA promising method for the measurement of the local acceleration of gravity using Bloch oscillations of ultracold atoms in a vertical standing wave
| Authors | Pierre Cladé, Saïda Guellati-Khélifa, Catherine Schwob, François Nez, Lucile Julien, François Biraben |
|---|---|
| Categories | |
| ArXiv ID | physics/0506225 |
| URL | https://arxiv.org/abs/physics/0506225 |
| DOI | 10.1209/epl/i2005-10163-6 |
Abstract
An obvious determination of the acceleration of gravity g can be deduced from the measurement of the velocity of falling atoms using a pi-pi pulses sequence of stimulated Raman transitions. By using a vertical standing wave to hold atoms against gravity, we expect to improve the relative accuracy by increasing the upholding time in the gravity field and to minimize the systematic errors induced by inhomogeneous fields, owing to the very small spatial amplitude of the atomic center-of-mass wavepacket periodic motion. We also propose to use such an experimental setup nearby a Watt balance. By exploiting the g/h (h is the Planck constant) dependence of the Bloch frequency, this should provide a way to link a macroscopic mass to an atomic mass.
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"abstract": "An obvious determination of the acceleration of gravity g can be deduced from\nthe measurement of the velocity of falling atoms using a pi-pi pulses sequence\nof stimulated Raman transitions. By using a vertical standing wave to hold\natoms against gravity, we expect to improve the relative accuracy by increasing\nthe upholding time in the gravity field and to minimize the systematic errors\ninduced by inhomogeneous fields, owing to the very small spatial amplitude of\nthe atomic center-of-mass wavepacket periodic motion. We also propose to use\nsuch an experimental setup nearby a Watt balance. By exploiting the g/h (h is\nthe Planck constant) dependence of the Bloch frequency, this should provide a\nway to link a macroscopic mass to an atomic mass.",
"arxiv_id": "physics/0506225",
"authors": [
"Pierre Clad\u00e9",
"Sa\u00efda Guellati-Kh\u00e9lifa",
"Catherine Schwob",
"Fran\u00e7ois Nez",
"Lucile Julien",
"Fran\u00e7ois Biraben"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1209/epl/i2005-10163-6",
"title": "A promising method for the measurement of the local acceleration of gravity using Bloch oscillations of ultracold atoms in a vertical standing wave",
"url": "https://arxiv.org/abs/physics/0506225"
},
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