Work

All-optical measurement of magnetic fields for quantum gas experiments

Year: 2024

Type: article

Abstract: We present an all-optical method to measure and compensate for residual magnetic fields present in a cloud of ultracold atoms trapped in an optical dipole trap. Our approach leverages the increased loss from the trapped atomic sample through electromagnetically induced absorption. Modulating the excitation laser provides coherent sidebands, resulting in a Λ-type pump-probe scheme. Scanning an additional magnetic offset field leads to pairs of sub-natural linewidth resonances, whose positions encode the magnetic field in all three spatial directions. Our measurement scheme is readily implemented in typical quantum gas experiments and has no particular hardware requirements.

Source: Review of Scientific Instruments

DOI: 10.1063/5.0191479

Authors: Suthep Pomjaksilp, Sven Schmidt, Aaron Thielmann, Thomas Niederprüm, Herwig Ott

Institutions: University of Kaiserslautern, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau

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: hybrid

Funder: Deutsche Forschungsgemeinschaft

Awards: TRR 185: OSCAR Kontrolle atomarer und photonischer Quantenmaterie durch maßgeschneiderte Kopplung an Reservoire, G3060931609, G7613874394