Recent Submissions

  • Simulating a topological gauge theory in a Raman-dressed Bose-Einstein condensate 

    Frölian, Anika (Universitat Politècnica de Catalunya, 2022-04-24)
    Doctoral thesis
    Open Access
    Ultracold quantum gases constitute a powerful and versatile tool to experimentally explore quantum many-body physics. This thesis presents an original contribution to the quantum simulation of gauge theories with ultracold ...
  • Further into the infrared with quantum dot photodetectors 

    Özdemir, Onur (Universitat Politècnica de Catalunya, 2022-02-04)
    Doctoral thesis
    Open Access
    In the infrared, photodetectors are the key components in a wide-variety of applications such as thermal imaging, remote sensing, spectroscopy with newer technologies added to the list such as LiDaR and deep tissue imaging. ...
  • Spatiotemporal organisation of protein nanoclusters in adhesion complexes 

    Keary, Sarah (Universitat Politècnica de Catalunya, 2022-02-28)
    Doctoral thesis
    Open Access
    The main goal of this thesis was to contribute to the understanding of the nanoscale lateral organisation of key proteins in adhesion complexes. For this, we exploited single molecule localisation-based super-resolution ...
  • Photodetectors based on graphene pn-junctions for mid-infrared and terahertz range 

    Castilla, Sebastián (Universitat Politècnica de Catalunya, 2022-01-27)
    Doctoral thesis
    Open Access
    Long wavelength light contains the infrared and terahertz (THz) spetral range of the spectrum. This wavelength range spans approximately from 1 µm to 1 mm. Several applications can be explored in this spectral range such ...
  • Inhomogeneity and disorder in ultrafast phase transitions 

    Pérez Salinas, Daniel (Universitat Politècnica de Catalunya, 2022-01-31)
    Doctoral thesis
    Open Access
    In the recent decades, there has been a surge of interest in the wide array of emergent phenomena found in strongly correlated materials. Understanding the inner workings of this type of systems is a major challenge due ...
  • Versatile nonlinear frequency conversion sources in the near- and mid-infrared 

    Sukeert, Sukeert (Universitat Politècnica de Catalunya, 2022-03-11)
    Doctoral thesis
    Open Access
    Tunable laser sources in different spectral regions are of interest for a variety of applications including spectroscopy, trace gas sensing, medical diagnostics, LIDAR and material processing. Existing lasers have limited ...
  • Optomechanical resonators based on low dimensional materials 

    Tepsic, Slaven (Universitat Politècnica de Catalunya, 2021-07-07)
    Doctoral thesis
    Open Access
    Mechanical resonators based on low dimensional materials have attracted a lot of attention due to their remarkable properties. Their ultra-low mass and high Q factors make them exceptional sensors, offering new possibilities ...
  • Spinor Bose-Einstein comagnetometer and interhyperfine interactions in 87Rb 

    Gómez Kabelka, Pau (Universitat Politècnica de Catalunya, 2021-09-28)
    Doctoral thesis
    Open Access
    In this work we demonstrate the first realization of a comagnetormeter in the ultracold regime. In comparison to regular magnetometers, which are designed to maximize their magnetic field sensitivity, a comagnetometer uses ...
  • A versatile system for the study of light-matter interactions at the level of individual particles 

    Bianchet, Lorena C. (Universitat Politècnica de Catalunya, 2022-02-25)
    Doctoral thesis
    Open Access
    In this thesis, a single-atom trap in a "Maltese cross'' geometry (MCG) was designed, built up and characterized. A MCG atom trap uses four in-vacuum lenses to achieve four-directional high-numerical-aperture optical ...
  • Witnessing non-Markovian evolutions 

    Santis, Dario de (Universitat Politècnica de Catalunya, 2021-06-22)
    Doctoral thesis
    Open Access
    The formulation of quantum physics stands among the most revolutionary theories of the twentieth century. During the first decades of this century, many phenomena concerning the microscopic world were unexplained or had ...
  • Exploring twisted bilayer graphene with nano-optics 

    Hesp, Niels Caspar Herman (Universitat Politècnica de Catalunya, 2021-10-20)
    Doctoral thesis
    Open Access
    Nano-optics studies the behaviour of light on the nanoscale. In particular, it probes the interaction of light with objects, often of nanometre-size, and reveals fine details of the material's optical properties. Optoelectronics ...
  • Narrowband photon pairs for atoms: high resolution spectral engineering and characterisation 

    Prakash, Vindhiya (Universitat Politècnica de Catalunya, 2021-12-16)
    Doctoral thesis
    Open Access
    This thesis describes experimental work to generate and characterise single photons and photon pairs, with frequency content suitable for controlled interaction with cold rubidium atoms. We describe a photon-pair source, ...

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