We are constantly looking for
PhD & postdoc candidates
as well as
B. Sc., M. Sc. candidates, and research assistants!
Please contact Dennis Schlippert (email@example.com) for further information!
Master thesis available!
Environment modelling of the HITec-building for atom interferometry
The “Very Long Baseline Atom Interferometer“-Teststand (VLBAI) is one of three major research facilities within the currently being established “Hannover Institut für Technologie“ (HITec). Building up upon the first quantum test of the universality of free fall (UFF) with rubidium and potassium [Schlippert et al., Phys. Rev. Lett. 112, 203002 (2014)] and previous work in the drop tower in Bremen [Müntinga et al., Phys. Rev. Lett. 110, 093602 (2013)] we intend to perform absolute gravimetry with ultracold rubidium atoms on a 10 m baseline at a resolution of von 5x10-10 m/s2 and an inaccuracy < 10-9 m/s2 within the framework of Collaborative Research Center 1128 “Relativistic Geodesy and Gravimetry with Quantum Sensors“ (geo-Q). Furthermore, we envisage the operation of a dual-species gravimeter with rubidium and ytterbium to perform a test of the UFF with an inaccuracy of 7 x 10-13 [Hartwig et al., New J. Phys. 17, 035011 (2015)]. Here, ytterbium with its large mass and low sensitivity to magnetic fields offers the potential of improved control over systematic effects and a high sensitivity to violations of the universality of free fall in combination with rubidium.
In order to support the existing team, a master thesis is adervtised!
The central topic of this master thesis will be the self-gravity modelling of the HITec-building. Building up upon the model, the influence of gravity gradients onto atom interferometers and the resulting requirements imposed on the latter will be analyzed.