A mobile atom interferometer for high-precision measurements of local gravity [Elektronische Ressource] / Alexander Senger. Gutachter: Achim Peters, Ph.D. ; Oliver Benson ; Markus Arndt

A Mobile Atom Interferometer forHigh-Precision Measurements of Local GravityDissertationzur Erlangung des akademischen Gradesdoctor rerum naturalium(Dr. rer. nat.)im Fach Physikeingereicht an derMathematisch-Naturwissenschaftlichen Fakultät Ider Humboldt-Universität zu BerlinvonDipl.-Phys. Alexander SengerPräsident der der Humboldt-Universität zu Berlin:Prof. Dr. Jan-Hendrik OlbertzDekan der Mathematisch-Naturwissenschaftlichen Fakultät I:Prof. Dr. Andreas HerrmannGutachter:1. Prof. Achim Peters, Ph.D.2. Prof. Dr. Oliver Benson3. Prof. Dr. Markus ArndtTag der mündlichen Prüfung: 22.11.2011für Sara, Ferdinand und FelixAbstractPrecise measurements of Earth’s gravitational acceleration g areimportant for a range of fundamental problems—e.g. the Watt bal-ance as an approach for a new definition of the kilogram—and agreat tool to investigate geophysical phenomena reaching from thetopmost layers of soil to the very core of our planet. Recently, re-search efforts have been madetodevelopdedicatedquantumsensorscapable of such measurements with very high precision and accu-racy.This thesis describes the design and implementation of such asensor, aiming at a superior accuracy of 0.5ppb, resolvable in mea-surementsof 24 h. Afeaturedistinguishingthisdevicefrompreviouswork is its mobility, allowing for comparison with other state-of-the-artinstruments, andforapplicationsinfielduseinvariouslocations.