Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 26: Poster – Precision Measurement, Metrology, and Quantum Effects
Q 26.26: Poster
Dienstag, 11. März 2025, 14:00–16:00, Tent
Cooling and diffraction of atoms with a multi-purpose laser system — •Ekim Taylan Hanimeli1, Simon Kanthak2, Matthias Gersemann3, Mikhail Cheredinov3, Sven Herrmann1, Claus Lämmerzahl1, Sven Abend3, Ernst M. Rasel3, and the QUANTUS team1,2,3,4,5,6 — 1ZARM, Universität Bremen — 2Institut für Physik, HU Berlin — 3Institut für Quantenoptik, LU Hannover — 4Universität Ulm — 5Technische Universität Darmstadt — 6Johannes Gutenberg-Universität Mainz
As part of the QUANTUS project, we are working to advance matter-wave interferometry techniques. One of the avenues we investigate is the application of Bragg and Raman diffractions in a single experimental sequence, allowing independent manipulation of the internal and external states of atoms, enabling techniques such as blow-away pulses or the use of clock states.
This contribution presents results obtained with a compact fiber laser system that enables these diffraction techniques, and provides optical cooling and detection. We have achieved stable and efficient double Bragg and double Raman beamsplitters, as well as blow away sequences. We were also able to utilize the capability for Raman pulses for gray molasses cooling.
The project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) under grant number DLR 50 WM 2450C (QUANTUS-VI).
Keywords: Interferometry; Raman; Bragg; Cooling; Gray Molasses