Quantum sensors based on atom interferometry are precise measurement devices whose ultimate performance can be reached using Bose–Einstein condensates (BECs) in extended free fall. This thesis summarizes the endeavour of ...

In the past century, the development of gravimeters with low uncertainty and long-term stability has led to new fields of research in geodesy and geoscience. Decreasing the instrumental measurement uncertainty further will ...

Microgravity platforms enable cold atom research beyond experiments in typical laboratories by removing restrictions due to the gravitational acceleration or compensation techniques. While research in space allows for ...

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Several aspects of testing the universality of free fall (UFF) with spaceborne atom interferometers are discussed. Theoretical effects that could lead to an (apparent) violation of the UFF are reviewed and the requirements ...

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Long-baseline precision tests based on atom interferometry require drastic control over the initial external degrees of freedom of atomic ensembles to reduce systematic effects. The use of optical lattices (OLs) is a highly ...

In dieser Arbeit werden quantenentartete Gemische auf ihre Eigenschaften als Quellen für Präzisionsatominterferometer zum Test des Einsteinschen Äquivalenzprinzips untersucht. Um die notwendige Auflösung zu erreichen, ...