Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908625110302720 |
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| author | Thekkeppatt, Premjith Digvijay Urech, Alexander Schreck, Florian van Druten, Klaasjan |
| author_facet | Thekkeppatt, Premjith Digvijay Urech, Alexander Schreck, Florian van Druten, Klaasjan |
| contents | We demonstrate nuclear magnetic resonance of optically trapped ground-state ultracold 87Sr atoms. Using a scheme in which a cloud of ultracold 87Rb is co-trapped nearby, we improve the determination of the nuclear g factor, gI , of atomic 87Sr by more than two orders of magnitude, reaching accuracy at the parts-per-million level. We achieve similar accuracy in the ratio of relevant g factors between Rb and Sr. This establishes ultracold 87Sr as an excellent linear in-vacuum magnetometer. These results are relevant for ongoing efforts towards quantum simulation, quantum computation and optical atomic clocks employing 87Sr, and these methods can also be applied to other alkaline-earth and alkaline-earth-like atoms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_11242 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms Thekkeppatt, Premjith Digvijay Urech, Alexander Schreck, Florian van Druten, Klaasjan Atomic Physics Quantum Physics We demonstrate nuclear magnetic resonance of optically trapped ground-state ultracold 87Sr atoms. Using a scheme in which a cloud of ultracold 87Rb is co-trapped nearby, we improve the determination of the nuclear g factor, gI , of atomic 87Sr by more than two orders of magnitude, reaching accuracy at the parts-per-million level. We achieve similar accuracy in the ratio of relevant g factors between Rb and Sr. This establishes ultracold 87Sr as an excellent linear in-vacuum magnetometer. These results are relevant for ongoing efforts towards quantum simulation, quantum computation and optical atomic clocks employing 87Sr, and these methods can also be applied to other alkaline-earth and alkaline-earth-like atoms. |
| title | Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2504.11242 |