Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms

• URL: http://arxiv.org/abs/2504.11242v1
• Date: Tue, 15 Apr 2025 14:43:03 GMT
• Title: Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms
• Authors: Premjith Thekkeppatt, Digvijay, Alexander Urech, Florian Schreck, Klaasjan van Druten,
• Abstract summary: We demonstrate nuclear magnetic resonance of optically trapped ground-state ultracold 87Sr atoms.<n>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.
• Score: 39.58317527488534
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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