Cold Beam Optical Clock with Multifrequency Spectroscopy
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866912206288846848 |
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| author | Tobias, William G. Hemingway, Bryan Peil, Steven |
| author_facet | Tobias, William G. Hemingway, Bryan Peil, Steven |
| contents | We demonstrate an optical clock based on Ramsey-Bordé interferometry in a laser-cooled ${}^{40}$Ca beam. The mean velocity is reduced by an order of magnitude relative to a thermal beam and the transverse temperature approaches the Doppler limit, enabling the measurement of sub-kHz linewidth fringes in a compact interferometer. Using tailored phase and intensity modulation of the spectroscopy laser to add uniform frequency sidebands, we interrogate atoms throughout the transverse velocity distribution, increasing the Ramsey-Bordé fringe amplitude by a factor of 14 and improving the Allan deviation to $3.4\times 10^{-15}$ at one second averaging time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_13512 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cold Beam Optical Clock with Multifrequency Spectroscopy Tobias, William G. Hemingway, Bryan Peil, Steven Atomic Physics We demonstrate an optical clock based on Ramsey-Bordé interferometry in a laser-cooled ${}^{40}$Ca beam. The mean velocity is reduced by an order of magnitude relative to a thermal beam and the transverse temperature approaches the Doppler limit, enabling the measurement of sub-kHz linewidth fringes in a compact interferometer. Using tailored phase and intensity modulation of the spectroscopy laser to add uniform frequency sidebands, we interrogate atoms throughout the transverse velocity distribution, increasing the Ramsey-Bordé fringe amplitude by a factor of 14 and improving the Allan deviation to $3.4\times 10^{-15}$ at one second averaging time. |
| title | Cold Beam Optical Clock with Multifrequency Spectroscopy |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2409.13512 |