dorsal/arxiv
View SchemaProposed search for an electric-dipole moment using laser-cooled $^{171}$Yb atoms
| Authors | Vasant Natarajan |
|---|---|
| Categories | |
| ArXiv ID | physics/0510087 |
| URL | https://arxiv.org/abs/physics/0510087 |
| DOI | 10.1140/epjd/e2004-00175-2 |
| Journal | Eur. Phys. J. D 32, 33-38 (2005) |
Abstract
We propose an experiment to search for a permanent atomic electric-dipole moment (EDM) using laser-cooled $^{171}$Yb atoms launched in an atomic fountain. A uniform B field sets the quantization axis, and the Ramsey separated-oscillatory-fields method is used to measure the Zeeman precession frequency of the atoms. Laser beams of appropriate polarization are used for preparation and detection in a given magnetic sublevel. The signature of an EDM is a shift in the Ramsey resonance correlated with application of a large E field. The precision is expected to be at least 20 times better than current limits because the use of a cold atomic beam allows application of E field 10 times larger than in a vapor cell, and the interaction time with the E field is 200 times larger compared to a thermal beam. The leading source of systematic error in beam experiments, the (E x v/c) motional magnetic field, is reduced considerably because of the near-perfect reversal of velocity between up and down trajectories through the E-field region.
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"abstract": "We propose an experiment to search for a permanent atomic electric-dipole\nmoment (EDM) using laser-cooled $^{171}$Yb atoms launched in an atomic\nfountain. A uniform B field sets the quantization axis, and the Ramsey\nseparated-oscillatory-fields method is used to measure the Zeeman precession\nfrequency of the atoms. Laser beams of appropriate polarization are used for\npreparation and detection in a given magnetic sublevel. The signature of an EDM\nis a shift in the Ramsey resonance correlated with application of a large E\nfield. The precision is expected to be at least 20 times better than current\nlimits because the use of a cold atomic beam allows application of E field 10\ntimes larger than in a vapor cell, and the interaction time with the E field is\n200 times larger compared to a thermal beam. The leading source of systematic\nerror in beam experiments, the (E x v/c) motional magnetic field, is reduced\nconsiderably because of the near-perfect reversal of velocity between up and\ndown trajectories through the E-field region.",
"arxiv_id": "physics/0510087",
"authors": [
"Vasant Natarajan"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1140/epjd/e2004-00175-2",
"journal_ref": "Eur. Phys. J. D 32, 33-38 (2005)",
"title": "Proposed search for an electric-dipole moment using laser-cooled $^{171}$Yb atoms",
"url": "https://arxiv.org/abs/physics/0510087"
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