Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 12: Ultra-cold atoms, ions and BEC
A 12.4: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik
Planar diffraction optics on an atom chip — •Hendrik Heine1, Alexander Kassner2, Marc C. Wurz2, Waldemar Herr1, and Ernst M. Rasel1 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2Institut für Mikroproduktionstechnik, Leibniz Universität Hannover
Atom interferometry with Bose-Einstein condensates (BECs) promises great improvements of atomic gravimeters, especially when combined with an atom chip source. These have proven their ability to create BECs with a high flux in an efficient and reliable way giving access to the BEC’s unique properties to utilise large momentum transfer beamsplitters and a reduced spatial expansion rate by delta-kick collimation. Although power and size consumption is already quite reduced with the chip technology, further reduction and simplification is still desirable.
On this poster I will present a prototype that combines optical gratings with an atom chip in order to create a magneto-optical trap above the chip surface from a single beam of light. This will intrinsically increase the robustness and bring chip-scale sensors within reach, paving the way for compact quantum sensors on ground and future missions with ultra cold atoms in space.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under grant number DLR 50WM1650 (KACTUS) and by the Deutsche Forschungsgemeinschaft (DFG) within the SFB 1128 geo-Q.