Quantum-Assisted Measurement of Atomic Diamagnetism
| Autor: | Markus Arndt, Filip Kiałka, Yaakov Y. Fein, Armin Shayeghi, Stefan Gerlich, Philipp Rieser, Philipp Geyer, Lukas Mairhofer |
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| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics General Physics Atom interferometer QC1-999 Measure (physics) General Physics and Astronomy 01 natural sciences 010305 fluids & plasmas Atomic Molecular & Optical Condensed Matter::Superconductivity 0103 physical sciences Physics::Atomic and Molecular Clusters Diamagnetism Physics::Atomic Physics Sensitivity (control systems) Atomic physics 010306 general physics Quantum |
| Zdroj: | Physical Review X, Vol 10, Iss 1, p 011014 (2020) |
| ISSN: | 2160-3308 |
| Popis: | 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} m^{3}/kg for barium and −7.0±0.3±0.7×10^{−9} m^{3}/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. |
| Databáze: | OpenAIRE |
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