Enviaments recents

  • Lens-free interferometric microscope for transparent materials 

    Terborg, Roland A. (Universitat Politècnica de Catalunya, 2018-10-19)
    Tesi
    Accés obert
    As health systems fight against epidemics and infectious diseases, new forms of diagnostics need to be developed in order to meet the growing demand for services, often in locations without the necessary infrastructure. ...
  • Optical surfaces for mid-infrared sensing 

    Gopalan, Kavitha Kalavoor (Universitat Politècnica de Catalunya, 2018-10-22)
    Tesi
    Accés obert
    The mid-infrared (mid-IR) spectral region, with wavelengths between 3 and 15 µm, is known for a wide range of applications ranging from spectroscopic sensing to thermal imaging. However, despite the strong technological ...
  • Quantum Brownian motion revisited : extensions and applications 

    Lampo, Aniello (Universitat Politècnica de Catalunya, 2018-10-02)
    Tesi
    Accés obert
    Quantum Brownian motion represents a paradigmatic model of open quantum system, namely a system which cannot be treated as an isolated one, because of the unavoidable interaction with the surrounding environment. In this ...
  • Nonlocal resources for quantum information tasks 

    Curchod, Florian John (Universitat Politècnica de Catalunya, 2018-10-11)
    Tesi
    Accés obert
    This thesis focusses on the essential features of Quantum Theory that are systems in an entangled state and Bell nonlocal correlations. Here, we take the angle of a resource theory and are interested in understanding better ...
  • Quantum liquid droplets in a mixture of Bose-Einstein condensates 

    Cabrera Córdova, César Raymundo (Universitat Politècnica de Catalunya, 2018-10-10)
    Tesi
    Accés obert
    In this thesis, we report on the design and construction of a quantum simulator experiment using quantum gases in Spain. This experiment exploits mixtures of the three isotopes of potassium, which give access in an original ...
  • Device-independent certification of quantum resources 

    Supic, Ivan (Universitat Politècnica de Catalunya, 2018-09-19)
    Tesi
    Accés obert
    The last two decades have been a very fruitful period for the fundamental research related to quantum information theory. Today we have a fairly good understanding of how intrinsically quantum properties affect various ...
  • Quantum frecuency conversion for hybrid quantum networks 

    Maring, Nicolas (Universitat Politècnica de Catalunya, 2018-09-13)
    Tesi
    Accés obert
    The ability to control the optical frequency of quantum state carriers (i.e. photons) is an important functionality for future quantum networks. It allows all matter quantum systems - nodes of the network - to be compatible ...
  • Nonlinear behaviour of ultracold atoms in optical dipole traps : large atomic light shifts, a quantum phase transition, and interaction-dependent dynamics 

    Coop, Simon (Universitat Politècnica de Catalunya, 2018-09-06)
    Tesi
    Accés obert
    This thesis reports on theory and results from two experiments related to nonlinear behaviour in ensembles of optically-trapped ultracold atoms. The first experiment, performed at ICFO in Barcelona, regards the prediction ...
  • A versatile source of light-matter quantum states based on laser-cooled atoms 

    Farrera Soler, Pau (Universitat Politècnica de Catalunya, 2018-07-25)
    Tesi
    Accés obert
    Quantum information is a fascinating field that studies situations in which information is encoded as quantum states. This encoding is affected by quantum physical effects (such as superposition or entanglement) and its ...
  • Attosecond X-ray absorption fine-structure spectroscopy in condensed matter 

    Buades, Bárbara (Universitat Politècnica de Catalunya, 2018-07-31)
    Tesi
    Accés obert
    Attoscience aims to study electron dynamics in matter with unprecedented temporal resolution by using the shortest pulses generated on Earth. Currently, such resolution is only provided by sources that deliver attosecond ...
  • High-power fiber-laser-pumped picosecond nonlinear optical sources from the near- to mid-infrared 

    Parsa, Shahrzad (Universitat Politècnica de Catalunya, 2018-07-24)
    Tesi
    Accés obert
    Ultrafast picosecond coherent sources in the near-to-mid-infrared (IR) spectral range are of great interest for a variety of applications such as pump-probe spectroscopy, remote sensing, photobiology and novel upconversion ...
  • Novel regimes of quantum optomechanics 

    Neumeier, Lukas (Universitat Politècnica de Catalunya, 2018-07-02)
    Tesi
    Accés obert
    In everyday life the impact of light on the motion of mechanical objects is negligible. However, modern experiments making use of high quality optical resonators are able to observe significant effects originating from the ...

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