Browse QUEST-Leibniz-Forschungsschule by License

Browse QUEST-Leibniz-Forschungsschule by License

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  • A transportable optical lattice clock for metrology and geodesy 
    Grotti, Jacopo (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    This work presents the first measurement campaigns performed with PTB transportable optical lattice clock based on Strontium atoms for applications in clock comparisons and relativistic geodesy.
  • Accurate atom counting for entanglement-enhanced atom interferometry 
    Hüper, Andreas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Atom interferometers belong among today's most precise sensors and offer a broad range of possible metrological applications. Given their ability to measure accelerations and rotations precisely, they are suitable for ...
  • All-fiber amplifier based on chirally-coupled-core fibers for gravitational wave detectors 
    Hochheim, Sven (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    Für die Entwicklung neuartiger Gravitationswellendetektoren auf Basis interferometrischer Messungen werden spezielle Hochleistungslaser benötigt. Die Designstudie für das europäische "Einstein Teleskop" offenbarte, dass ...
  • An aluminum optical clock setup and its evaluation using Ca+ 
    Kramer, Johannes Albrecht (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    This thesis reports about the progress of the aluminum ion clock that is set up at the German National Metrological Institute, Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig. All known relevant systematic ...
  • Analysis of tilt-to-length coupling in the GRACE follow-on laser ranging interferometer 
    Wegener, Henry Paul (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2022)
    This thesis provides a detailed analysis of the coupling of satellite rotations into the inter-satellite range, measured by the Laser Ranging Interferometer (LRI) onboard the GRACE Follow-On satellites.
  • Atom interferometry for tests of general relativity 
    Loriani Fard, Sina Leon (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    The search for a fundamental, self-consistent theoretical framework to cover phenomena over all energy scales is possibly the most challenging quest of contemporary physics. Approaches to reconcile quantum mechanics and ...
  • Atom interferometry with ultracold atoms for inertial sensing 
    Gersemann, Matthias (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    In light pulse atom interferometry wave packets are spatially separated and recombined in a coherent manner by interacting with laser pulses. Typically, two photon transitions are used to perform Rabi oscillations between ...
  • Atomic Friction and Symmetry-Breaking Transitions in Ion Coulomb Systems 
    Kiethe, Jan (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)
    Trapped ion Coulomb crystals are regularly used as analogue simulators for physical systems, for which the access to the dynamics of the individual particles is lacking or which are hard to simulate using classical computers. ...
  • Auxiliary function development for the LISA metrology system 
    Brause, Nils Christopher (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The Laser Interferometer Space Antenna (LISA) is a planned gravitational wave detector to be positioned in space. It consists of three spacecrafts that use Long Range Interferometry (LRI) to measure relative distance changes ...
  • Book of Abstracts for the European Quantum Technologies Conference (EQTC) 2023 
    Quantum Valley Lower Saxony (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2024-03-11)
    The EQTC 2023 held from October 16th to October 20th, 2023, in Hannover, was a week of conference and exhibition. The conference featured over 40 exhibitors, more than two-dozen plenary presentations and panel discussions, ...
  • Bose-Einstein condensation of K-41 and Rb-87 on an atom chip for sounding rocket missions 
    Piest, Baptist (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)
    Im Rahmen dieser Arbeit wird die atomchipbasierte Experimentierkammer für den Einsatz in den Höhenforschungsraketenmissionen MAIUS-2 und 3 aufgebaut und mit einem bodengestützten System in Betrieb genommen. Die neue ...
  • Characterisation and integration of an optomechanical system for an all-optical CQNC experiment 
    Schulte, Bernd Wolfgang (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    This thesis presents the development and characterisation of an optomechanical system (OMS) with the aim to be part of an all-optical coherent quantum noise cancellation scheme (CQNC), as proposed by Tsang & Caves in ...
  • Compact, low-noise current drivers for quantum sensors with atom chips 
    Popp, Manuel André (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Quantum sensors based on atomic interferometry are becoming valued tools for precision measurements in various research areas such as metrology, Earth sciences and inertial sensors. However, the verification of their ...
  • Comparing GRACE Follow-On Inter-Satellite Pointing Angles from Star Camera and LRI Fast Steering Mirror 
    Müller, Laura (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023-07-26)
    The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission is observing the time variable gravity field by measuring distance variations between two satellites. The first Laser Ranging Interferometer (LRI) ...
  • Constructing networks of quantum channels for state preparation 
    Bondarenko, Dmytro (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)
    Entangled possibly mixed states are an essential resource for quantum computation, communication, metrology, and the simulation of many-body systems. It is important to develop and improve preparation protocols for such ...
  • Cryogenic silicon Fabry-Perot resonator with Al0.92Ga0.08As/GaAs mirror coatings 
    Yu, Jialiang (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    The sensitivity and stability of today's most precise optical interferometers, like gravitational wave detectors and ultra-stable lasers, are fundamentally limited by thermodynamically induced length fluctuations of ...
  • A cryogenic Strontium lattice clock 
    Schwarz, Roman (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2022)
    Optical clocks have moved to the forefront of frequency metrology. Their outstanding performances enable the exploration of new fields of research such as the search for dark matter and dark energy [1, 2], temporal drifts ...
  • Development of an advanced tilt actuator for tilt-to-length coupling investigations 
    Lee, Yongho (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021-09-16)
    A coupling between angular jitter of satellite and length readout, called tilt-to-length coupling, is one of the major noise sources in space-based laser interferometers such as LISA and GRACE Follow-On. With comprehensive ...
  • Dynamical horizons in binary black hole mergers 
    Pook-Kolb, Daniel Klaus Ortwin (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Marginally outer trapped surfaces (MOTSs) are the main tool in numerical relativity to infer properties of black holes in simulations of highly dynamical systems. On the one hand, the present work extends previous numerical ...
  • The electronic and experimental setup of the MAIUS-2 and MAIUS-3 sounding rocket missions 
    Bartosch, Wolfgang (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021-10-04)
    Das Finden einer universellen Theorie der physikalischen Grundkräfte stellt einen großen Teil der Anstrengungen der fundamentalen Physik im letzten Jahrzehnt dar. Das Standartmodell der Teilchenphysik scheint mit Einsteins ...

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