Quantum-Assisted Measurement of Atomic Diamagnetism

Autor(en)

Yaakov Y. Fein, Armin Shayeghi, Lukas Mairhofer, Filip Kiałka, Philipp Rieser, Philipp Geyer, Stefan Gerlich, Markus Arndt

Abstrakt

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(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Journal

Physical Review X

Band

10

Anzahl der Seiten

7

ISSN

2160-3308

DOI

https://doi.org/10.1103/PhysRevX.10.011014

Publikationsdatum

01-2020

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103017 Magnetismus

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/2349f74d-33c3-49be-9993-6782711853db