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Q: Fachverband Quantenoptik und Photonik
Q 54: Posters: Quantum Optics and Photonics IV
Q 54.5: Poster
Donnerstag, 12. März 2020, 16:30–18:30, Empore Lichthof
Collimation of atomic ensembles in space — •Annie Pichery1,2, Waldemar Herr1, Matthias Meister3, Patrick Boegel3, Wolfgang P. Schleich3, Ernst M. Rasel1, Eric Charron2, Naceur Gaaloul1, and Nicholas P. Bigelow4 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Germany — 2Institut des Sciences Moléculaires d’Orsay, Université Paris-Saclay, France — 3Institut für Quantenphysik, Universität Ulm, Germany — 4University of Rochester, New York, USA
Ensembles of cold atoms behave as matter-waves and are routinely used as input states for atom interferometers. The free expansion and the inherent atomic density drop make the signal detection difficult. By analogy with light, it is possible to collimate the clouds with atomic lenses, using the delta-kick collimation technique. In this contribution, we study a protocol for controlling the expansion of an atomic cloud applied to experiments in the NASA Cold Atom Laboratory (CAL) on board of the International Space Station. Such clouds collimated with the delta-kick technique could be observed over long periods of almost 400 ms. Other important techniques towards the preparation of atomic sources for precision atom interferometry in space are reported.
We acknowledge financial support from the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under Grant No. 50WM1861/2, and by *Niedersächsisches Vorab* through the QUANOMET initiative-project QT3, and financial support from NASA through CUAS RSAs including 1585910.