Work

Measurement of the g Factor of Ground-State Sr 87 at the Parts-per-Million Level Using Co-Trapped Ultracold Atoms

Year: 2025

Type: article

Abstract: We demonstrate nuclear magnetic resonance of optically trapped ground-state ultracold ^{87}Sr atoms. Using a scheme in which a cloud of ultracold ^{87}Rb is co-trapped nearby, we improve the determination of the nuclear g factor, g_{I}, of atomic ^{87}Sr 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 ^{87}Sr as an excellent linear in-vacuum magnetometer. More generally, our Letter demonstrates how ultracold neutral atoms can be used for the precise determination of highly relevant atomic and nuclear magnetic properties. These results are important for ongoing efforts toward quantum simulation, quantum computation and optical atomic clocks employing ^{87}Sr, and other neutral alkaline-earth and alkaline-earth-like atoms.

Source: Physical Review Letters

DOI: 10.1103/cjks-9hlp

Authors: Premjith Thekkeppatt, Digvijay, Alexander Urech, Florian Schreck, Klaasjan van Druten

Institutions: Institute of Physics, Van der Waals-Zeeman Institute, University of Amsterdam, QuSoft

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Commission, Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Awards: Atomic quantum simulators 2.0 - taming the long-range interactions, Qudits in theory and experiment, Modular Systems for Advanced Integrated Quantum Clocks