Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 82: Matter Wave Interferometry, Metrology, and Fundamental Physics IV
Q 82.4: Vortrag
Freitag, 6. März 2026, 15:15–15:30, P 11
Advances in matter-wave interference of metal nanoparticles — •Richard Ferstl1, Sebastian Pedalino1, Bruno E. Ramírez-Galindo1, Klaus Hornberger2, Stefan Gerlich1, and Markus Arndt1 — 1Faculty of Physics, University of Vienna, Vienna, Austria — 2Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany
Metal nanoparticles are a promising platform for universal near-field matter-wave interference experiments with scalable masses. Such experiments require innovative methods for beam formation, coherent beam splitters and efficient detectors. Here we present the state of the art in quantum interference experiments based on photodepletion beam splitters using 266 nm deep ultraviolet light gratings. Our experiment confirms the quantum wave nature of massive sodium nanoparticles, establishing the highest macroscopicity in a quantum experiment to date. The observed phase stability and high sensitivity to external forces opens our experimental platform to precision sensing applications, both in the regime of quantum wave and classical ray optics.
Keywords: Matter-wave interference; Quantum superposition; Quantum macroscopicity; Cluster science