Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.34: Poster
Thursday, March 8, 2018, 16:15–18:15, Redoutensaal
Novel techniques for atom interferometry — •Dennis Schlippert1, Henning Albers1, Claus Braxmaier2, Felipe Guzmán2, Lee Kumanchik2, Dipankar Nath1, Logan Richardson1, Simon Roßmann1, Christian Schubert1, Ashwin Thennadil1, Wolfgang Ertmer1, and Ernst Rasel1 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2DLR Institut für Raumfahrtsysteme, Bremen
Today’s state-of-the-art atom gravimeters require improvements in stability and accuracy in order to fully exploit their potential with large scale factors on very long baselines on ground and in space. Here we report on work towards improving the accuracy of our Rb-K-interferometer by means of a time-averaged optical dipole trap. Dynamically shaping the potential allows one to increase the initial trap volume as well as the evaporation efficiency. Likewise, the potential can be adapted for common δ-kick collimation of the dual species ensemble, eliminating a leading systematic uncertainty and improving the contrast. Moreover, we employ a novel class of highly compact opto-mechanical inertial sensors for postcorrection of seismic noise, otherwise limiting the short term stability of the atom interferometer. We show first demonstration experiments as well as future directions for broad applications of hybrid systems.
The presented work is supported by CRC 1128 geo-Q, the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) (Grant No. 50WM1641), and through the Quantum- and Nano-Metrology (QUANOMET) initiative.