dorsal/arxiv
View SchemaOptical clocks based on ultra-narrow three-photon resonances in alkaline earth atoms
| Authors | Tao Hong, Claire Cramer, Warren Nagourney, E. N. Fortson |
|---|---|
| Categories | |
| ArXiv ID | physics/0409051 |
| URL | https://arxiv.org/abs/physics/0409051 |
| DOI | 10.1103/PhysRevLett.94.050801 |
| Journal | Phys. Rev. Lett. 94, 050801 (2005) |
Abstract
A sharp resonance line that appears in three-photon transitions between the $^{1}S_{0}$ and $^{3}P_{0}$ states of alkaline earth and Yb atoms is proposed as an optical frequency standard. This proposal permits the use of the even isotopes, in which the clock transition is narrower than in proposed clocks using the odd isotopes and the energy interval is not affected by external magnetic fields or the polarization of trapping light. The method has the unique feature that the width and rate of the clock transition can be continuously adjusted from the $MHz$ level to sub-$mHz$ without loss of signal amplitude by varying the intensities of the three optical beams. Doppler and recoil effects can be eliminated by proper alignment of the three optical beams or by point confinement in a lattice trap. The three beams can be mixed to produce the optical frequency corresponding to the $^{3}P_{0}$ - $^{1}S_{0}$ clock interval.
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"abstract": "A sharp resonance line that appears in three-photon transitions between the\n$^{1}S_{0}$ and $^{3}P_{0}$ states of alkaline earth and Yb atoms is proposed\nas an optical frequency standard. This proposal permits the use of the even\nisotopes, in which the clock transition is narrower than in proposed clocks\nusing the odd isotopes and the energy interval is not affected by external\nmagnetic fields or the polarization of trapping light. The method has the\nunique feature that the width and rate of the clock transition can be\ncontinuously adjusted from the $MHz$ level to sub-$mHz$ without loss of signal\namplitude by varying the intensities of the three optical beams. Doppler and\nrecoil effects can be eliminated by proper alignment of the three optical beams\nor by point confinement in a lattice trap. The three beams can be mixed to\nproduce the optical frequency corresponding to the $^{3}P_{0}$ - $^{1}S_{0}$\nclock interval.",
"arxiv_id": "physics/0409051",
"authors": [
"Tao Hong",
"Claire Cramer",
"Warren Nagourney",
"E. N. Fortson"
],
"categories": [
"physics.optics",
"physics.atom-ph",
"physics.gen-ph"
],
"doi": "10.1103/PhysRevLett.94.050801",
"journal_ref": "Phys. Rev. Lett. 94, 050801 (2005)",
"title": "Optical clocks based on ultra-narrow three-photon resonances in alkaline earth atoms",
"url": "https://arxiv.org/abs/physics/0409051"
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