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Q: Fachverband Quantenoptik und Photonik
Q 58: Matter Wave Optics
Q 58.10: Poster
Donnerstag, 17. März 2022, 16:30–18:30, P
Time-averaged potentials for optical matter-wave lensing — •Simon Kanthak1,2, Gilad Kaplan1, Martina Gebbe3, Ekim Hanimeli3, Matthias Gersemann4, Mikhail Cheredinov4, Sven Abend4, Ernst M. Rasel4, Markus Krutzik1,2, and the QUANTUS team1,2,3,4 — 1Institut für Physik, HU Berlin — 2Ferdinand-Braun-Institut, Berlin — 3ZARM, Universität Bremen — 4Institut für Quantenoptik, LU Hannover
Residual expansion and size of Bose-Einstein condensates, determined by the features of the release trap and repulsive atom-atom interactions, become the limiting factors for signal extraction in atom interferometry on long timescales. Attempts to overcome these limitations include precisely shaping the expansion of the atomic ensembles after the release via matter-wave lensing.
Optical potentials allow for the flexible creation of matter-wave lenses of different shapes and refractive powers [1]. Here, we report on the realization of and results with our dipole trap setup, which features an acousto-optical deflector to tailor potentials in multiple dimensions. With this setup, versatile optical lens systems can be engineered in pulsed schemes for ground-based sensors, which open the opportunity to compensate the center-of-mass motion of the atoms or to counteract anharmonicities of the release traps.
This work is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under Grant No. 50WM1952 (QUANTUS-V-Fallturm).
[1] S. Kanthak et al., 2021, New J. Phys. 23, 093002