Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 55: Matter Wave Optics
Q 55.1: Vortrag
Freitag, 13. März 2020, 11:00–11:15, a310
Quantum-Assisted Metrology in a Long-Baseline Matter-Wave Interferometer — •Sebastian Pedalino, Yaakov Fein, Philipp Geyer, Filip Kiałka, Stefan Gerlich, and Markus Arndt — Faculty of Physics, University of Vienna, Austria
Molecule interferometry is an intriguing tool to probe the foundations of quantum physics and it provides a useful platform for quantum assisted molecular measurements, where the interference fringes on the nanoscale can be shifted and detected with nanometer accuracy.
Here we present an upgraded technique to measure molecular properties, using the Long-Baseline Universal Matter-wave Interferometer (LUMI), a near-field interferometer designed for complex massive particles. Using LUMI we have recently demonstrated quantum superposition of molecules with masses exceeding 25 kDa and consisting of up to 2000 atoms [1]. The interferometer is able to probe the quantum nature of matter with de Broglie wavelengths down to 35 fm and it has an inertial force sensitivity of 10−26 N. The introduction of external fields allows us to explore the electronic, optical, magnetic and structural properties of a wide range of particles. We demonstrate these capabilities by measuring the static scalar polarizability of the fullerenes C60 and C70 [2] with improved precision. We have also measured for the first time the ground state diamagnetism of isolated barium and strontium in an atomic beam.
[1] Fein, Y.Y. et al. Nat. Phys. (2019) doi:10.1038/s41567-019-0663-9
[2] Fein, Y.Y. et al. Phys. Rev. Research (2019) doi: 10.1103/PhysRevResearch.00.003000