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Q: Fachverband Quantenoptik und Photonik

Q 22: Precision Measurements and Metrology I (joint session Q/A)

Q 22.12: Poster

Tuesday, March 15, 2022, 16:30–18:30, P

Testing trapped atom interferometry with time-averaged optical potentials — •Knut Stolzenberg, Sebastian Bode, Alexander Herbst, Henning Albers, and Dennis Schlippert — Institute of Quantum Optics, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany

Time-averaged optical potentials can be used to realise flexible quantum sensors, for example by exploiting the tunnel effect for beam splitters and recombiners.
We use an acousto-optical deflector (AOD) to diffract the laserlight of a 55W MOPA with a wavelength of 1064nm to create dynamic time-averaged traps such as harmonic and double well potentials.
We demonstrate creation of a ⁸⁷Rb BEC in a crossed optical dipole trap and our first results on coherent beam splitting by momentum driven tunneling, showing stable interference patterns 37ms after the BEC is split at a potential barrier.