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Q: Fachverband Quantenoptik und Photonik
Q 21: Ultracold Atoms (Trapping and Cooling)
Q 21.6: Vortrag
Dienstag, 10. März 2020, 15:30–15:45, f442
Optical trapping and optical delta-kick collimation of atom chip based BECs — •Simon Kanthak1, Martina Gebbe2, Matthias Gersemann3, Sven Abend3, Ernst M. Rasel3, Markus Krutzik1,4, and the QUANTUS team1,2,3,4,5 — 1Institut für Physik, HU Berlin — 2ZARM, Universität Bremen — 3Institut für Quantenoptik, LU Hannover — 4Ferdinand-Braun-Institut, Berlin — 5Institut für Physik, JGU Mainz
Inertial sensors based on matter wave interferometry highly benefit from low expansion rates and extended interrogation times of delta-kick collimated BECs. While atom chip technology allows for fast and efficient BEC production in compact setups, optical dipole traps offer various advantages compared to magnetic traps in the context of controlling the atomic interactions via Feshbach fields or in the reduction of the expansion rates via optical delta-kick collimation with improved harmonic potentials. To combine the benefits of both trap types, we realized a hybrid trap geometry consisting of a single beam dipole trap at 1064 nm in the vicinity of an atom chip. We report on our results of the efficient preparation and transfer of a 87Rb BEC from an atom chip trap into a dipole trap and demonstrate the capability of optical delta-kick collimation.
This work is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant number DLR50WP1432 and DLR50WM1852.