Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 17: Poster III
A 17.5: Poster
Tuesday, March 12, 2024, 17:00–19:00, Tent C
Optimal time-dependent manipulation of Bose-Einstein condensates — •Timothé Estrampes1,2, Alexander Herbst1, Annie Pichery1,2, Gabriel Müller1, Dennis Schlippert1, Ernst M. Rasel1, Éric Charron2, and Naceur Gaaloul1 — 1Leibniz University Hannover, Institut für Quantenoptik, Germany — 2Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay, France
Quantum sensing experiments benefit from fast Bose-Einstein Condensate (BEC) generation with small expansion energies. Here, we theoretically find the optimal BEC collimation parameters with painted optical potentials to experimentally achieve 2D expansion energies of 438(77) pK taking advantage of the tunable interactions by driving Feshbach resonances and engineering the collective oscillations. Based on these findings and corresponding simulations, we propose a scenario to realize 3D expansion energies on ground below 16 pK, going beyond the experimental state of the art in microgravity [A. Herbst et al., arXiv:2310.04383 (2023)].
Furthermore, we report on current theoretical studies of the dynamics of space single- and dual-BEC experiments including applications in NASA’s Cold Atom Lab aboard the International Space Station or the sounding rocket mission MAIUS-2, paving the way for next-generation quantum sensing experiments, including tests of fundamental physics such as Einstein’s equivalence principle.
This work is supported by the "ADI 2022" project funded by the IDEX Paris-Saclay, ANR-1-IDEX-0003-02 and the DLR with funds provided by the BMWi under Grant No. CAL-II 50WM2245A/B.
Keywords: Bose-Einstein Condensates; Painted Optical Potentials; Collimation; Mixture; Space