Quantum-Assisted Measurement of Atomic Diamagnetism
- Author(s)
- Yaakov Y. Fein, Armin Shayeghi, Lukas Mairhofer, Filip Kiałka, Philipp Rieser, Philipp Geyer, Stefan Gerlich, Markus Arndt
- Abstract
We report the first measurement of ground-state diamagnetism of isolated neutral atoms in an atomic beam. We realize this measurement using magnetic deflection of fringes in a long-baseline matter-wave interferometer. The observed diamagnetic susceptibilities of −5.8±0.2±0.4×10−9 m3/kg for barium and −7.0±0.3±0.7×10−9 m3/kg for strontium are in good agreement with the theoretical values and correspond to a measured force on the order of 10−26 N. The high force sensitivity also allows us to observe the isotope dependence of the interference visibility due to the nuclear permanent magnetic moment, thereby demonstrating a new method for neutral isotope selection. The universality of the technique allows the magnetism of a wide range of atoms and molecules to be studied in the gas phase.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- Journal
- Physical Review X
- Volume
- 10
- No. of pages
- 7
- ISSN
- 2160-3308
- DOI
- https://doi.org/10.1103/PhysRevX.10.011014
- Publication date
- 01-2020
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103017 Magnetism
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/quantumassisted-measurement-of-atomic-diamagnetism(2349f74d-33c3-49be-9993-6782711853db).html