Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 4: Matter Wave Optics I
Q 4.5: Talk
Monday, March 5, 2018, 11:30–11:45, K 1.013
Light-pulse atom interferometry with ultracold thermal clouds and realistic laser pulses — •Jens Jenewein, Albert Roura, Wolfgang P. Schleich, and the QUANTUS team — Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, D-89069 Ulm
Using our real-time simulation of Mach-Zehnder light-pulse atom interferometry, we investigate results of ground experiments with lensed thermal states carried out with the QUANTUS-1 device. We apply data analysis methods to the evaluation of the experimental data and compare them with our simulated results. Because our simulation incorporates the effects of realistic laser pulses (i.e. velocity selectivity and off-resonant diffraction orders), it is particularly suitable for the description of these interferometry experiments. This feature can be exploited to investigate in detail how the combination of delta-kick collimation with different amounts of evaporative cooling affects the contrast and the sensitivity of the interferometric measurements, which is also influenced by the total atom number.
The QUANTUS project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number 50WM1556.