QUEST-Leibniz-Forschungsschule

 

Recent Submissions

  • Loriani, S.; Schlippert, D.; Schubert, C.; Abend, S.; Ahlers, H.; Ertmer, W.; Rudolph, J.; Hogan, J.M.; Kasevich, M.A.; Rasel, E.M.; Gaaloul, N. (Bristol : Institute of Physics Publishing, 2019)
    Recent proposals for space-borne gravitational wave detectors based on atom interferometry rely on extremely narrow single-photon transition lines as featured by alkaline-earth metals or atomic species with similar electronic ...
  • Klempt, Carsten (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    This document contains the program and the abstracts of the conference "Quantum Metrology and Physics beyond the Standard Model" which was held from Jun 12th to June 14th, 2019.
  • Burgermeister, Tobias (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    Single ion frequency standards have demonstrated in several experiments excellent results and are approaching fractional frequency uncertainties of 10^-18. As dominant contributions to the uncertainty are linked to the ion ...
  • Corgier, Robin (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    Modern physics relies on two distinct fun- damental theories, General Relativity and Quantum Mechanics. Both describe on one hand macroscopic and cosmological phenomena such as gravitational waves and black holes and on ...
  • Rudolph, Jan (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2016)
    Quantum sensors based on the interference of cold atoms have advanced to the forefront of precision measurements in geodesy, metrology and tests of fundamental physics. The ultimate potential of these devices is realized ...
  • Zipfel, Klaus Hendrik (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    Mit ihren relativen Instabilitäten und Ungenauigkeiten von nur noch wenigen 10^-18 übertreffen optische Frequenzstandards bereits heutzutage die derzeit besten Mikrowellen-Atomuhren um mehrere Größenordnungen. Neben der ...
  • Ruhmann, Marc (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    This thesis comprises a numerical study of high-order harmonic generation (HHG) in the hydrogen molecule H2 and its heavier isotope D2. HHG refers to the emission of high-frequency radiation by an atom or molecule when it ...
  • Rühmann, Steffen (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Frequenzen sind die am präzisesten messbaren physikalischen Größen. Viele Messprinzipien und Geräte basieren daher primär auf der Bestimmung der Phase und Frequenz eines genauen und stabilen Oszillators. Die präzise ...
  • Schwarze, Thomas S. (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    This thesis was carried out in the area of gravitational physics, specifically in the fields of gravitational wave astronomy and gravimetry. Both fields do or will make use of satellite missions. The planned gravitational ...
  • Willemsen, Thomas; Jupé, Marco; Gyamfi, Mark; Schlichting, Sebastian; Ristau, Detlev (Washington, DC : Optical Society of America, 2017)
    Dielectric components are essential for laser applications. Chirped mirrors are applied to compress the temporal pulse broadening crucial in the femtosecond regime. However, the design sensitivity and the electric field ...
  • McNeur, Joshua; Kozák, Martin; Schönenberger, Norbert; Leedle, Kenneth J.; Deng, Huiyang; Ceballos, Andrew; Hoogland, Heinar; Ruehl, Axel; Hartl, Ingmar; Holzwarth, Ronald; Solgaard, Olav; Harris, James S.; Byer, Robert L.; Hommelhoff, Peter (Washington, DC : Optical Society of America, 2018)
    We experimentally demonstrate several physical concepts necessary for the future development of dielectric laser accelerators—photonic elements that utilize the inelastic interaction between electrons and the optical near ...
  • Velte, Ulrich (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    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 ...
  • Schreiber, Emil (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The first detections of gravitational waves have opened an exciting new field of astronomy. One of the most fundamental limitations for the sensitivity of current and future interferometric gravitational-wave detectors is ...
  • Brennecke, Simon; Lein, Manfred (Bristol : Institute of Physics Publishing, 2018)
    Photoelectron momentum distributions from strong-field ionization are calculated by numerical solution of the one-electron time-dependent Schrödinger equation for a model atom including effects beyond the electric dipole ...
  • Hannig, Stephan (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    At the time of writing, state of the art stationary optical clocks reach 10 −18 sys- tematic fractional frequency uncertainty, which allows for the search of new physics beyond the standard model and lays the foundation ...
  • 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 ...
  • Lange, Karsten (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The predictions of quantum mechanics often differ from our everyday experiences. In the classical case, the state of a system can be predicted precisely, assuming the exact knowledge of all parameters. This is not possible ...
  • Isleif, Katharina-Sophie (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The development and investigation of laser interferometry concepts for performing precise length measurements at frequencies below 1Hz is the main topic of this thesis. These concepts are quintessential for space-based ...
  • 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 ...
  • 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.

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