Progress toward a zero-magnetic-field environment for ultracold-atom experiments

Year: 2024

Authors: Rogora C., Cominotti R., Baroni C., Andreoni D., Lamporesi G., Zenesini A., Ferrari G.

Autors Affiliation: Univ Trento, Pitaevskii BEC Ctr, CNR INO, Trento, Italy; Univ Trento, Dipartimento Fis, I-38123 Trento, Italy; Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria; Trento Inst Fundamental Phys & Applicat, Ist Nazl Fis Nucleare, I-38123 Trento, Italy.

Abstract: The minimization of the magnetic field plays a crucial role in ultracold gas research. For instance, the contact interaction dominates all the other energy scales in the zero-magnetic-field limit, giving rise to novel quantum phases of matter. However, lowering magnetic fields well below the mG level is often challenging in ultracold gas experiments. In this paper, we apply Landau-Zener spectroscopy to characterize and reduce the magnetic field on an ultracold gas of sodium atoms to a few tens of mu G. The lowest magnetic field achieved here opens the way to observing novel phases of matter with ultracold spinor Bose gases.

Journal/Review: PHYSICAL REVIEW A

Volume: 110 (1)      Pages from: 13319-1  to: 13319-8

More Information: We acknowledge funding from Provincia Autonoma di Trento, from the European Union’s Horizon 2020 research and innovation Programme through the STAQS project of QuantERA II (Grant Agreement No. 101017733) , and from the European Union-Next Generation EU through PNRR MUR project PE0000023-NQSTI. We also acknowledge the project DYNAMITE QUANTERA2-00056 funded by the Ministry of University and Research through the ERANET COFUND QuantERA II – 2021 call and co-funded by the European Union (H2020, Grant Agreement No. 101017733) .INFN-National Institute for Nuclear Physics and CNR-National Research Council.r INFN-National Institute for Nuclear Physics and CNR-National Research Council.
KeyWords: Electron-microscope; Magnetoencephalography; Magnetometers
DOI: 10.1103/PhysRevA.110.013319

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