Enviaments recents

  • Quantum measurements with cold atomic ensembles 

    Colangelo, Giorgio (Universitat Politècnica de Catalunya, 2016-12-16)
    Tesi
    Accés obert
    This thesis describes quantum measurements of an ensemble of cold rubidium-87 atoms. We extend the covariance matrix formalism to spin-1 systems, including effects of decoherence, losses due to probing and atom number ...
  • Micro-nano structured optical devices using Ge2Sb2Te5 

    Rudé Moreno, Miquel (Universitat Politècnica de Catalunya, 2016-12-01)
    Tesi
    Accés obert
    Photonic devices are key to implement future communication and information technologies. Their success is largely determined by our capability to appropriately control light in such devices, especially in future reconfigurable ...
  • Spectral evidence for a condensate of dark excitons in a trap 

    Beian, Mussie (Universitat Politècnica de Catalunya, 2016-06-22)
    Tesi
    Accés obert
    Spatially indirect excitons, being composite bosons, are attractive candidates to explore correlated many-body systems. They possess an inherent large electric dipole, a four-fold spin manifold, and can be studied via the ...
  • Thermodynamics and quantum correlations 

    Perarnau Llobet, Martí (Universitat Politècnica de Catalunya, 2016-06-06)
    Tesi
    Accés obert
    Thermodynamics traditionally deals with macroscopic systems at thermal equilibrium. However, since the very beginning of the theory, its range of applicability has only increased, nowadays being applied to virtually every ...
  • Coherent control of nonlinear optical processes in individual nanoparticles 

    Accanto, Nicolò (Universitat Politècnica de Catalunya, 2016-06-16)
    Tesi
    Accés obert
    Nanophotonics aims to understand and control the interaction of light-matter at the nanometer scale. Boosted by the development of nanotechnology and nanofabrication, nanophotonics is a thriving research field, with ...
  • Graphene mechanical resonators coupled to superconducting microwave cavities 

    Weber, Peter (Universitat Politècnica de Catalunya, 2016-12-02)
    Tesi
    Accés obert
    In recent years, mechanical resonators based on graphene have attracted considerable interest as nanoelectromechanical systems (NEMS). Graphene NEMSs allow for exceptional properties such as high mechanical strength, high ...
  • Optical nanoantennas as cavities : nanoscale control of couplings strength and single photon emission 

    Singh, Anshuman (Universitat Politècnica de Catalunya, 2017-11-11)
    Tesi
    Accés obert
    Optical nanoantennas confine light on the nanoscale, enabling strong light-matter interactions with potential for ultra-compact optical devices. Apart from the direct applications in optical nanoscopy and sensing, nanoantennas ...
  • Quantum light source compatible with solid-state quantum memories and telecom networks 

    Rieländer, Daniel (Universitat Politècnica de Catalunya, 2016-11-24)
    Tesi
    Accés obert
    This PhD thesis is in the scope of experimental quantum communication. It deals with correlated photon pairs of which one photon is stored in a solid state device, while the other photon is at telecom wavelength. Quantum ...
  • Unravelling 3D cargo transport dynamics at the microtubule network with super-resolution microscopy 

    Verdeny Vilanova, Ione (Universitat Politècnica de Catalunya, 2016-10-13)
    Tesi
    Accés obert
    Intracellular transport plays an essential role in a wide variety of fundamental cellular processes required to maintain the internal regulation and organization of cells. Different types of cargos such as organelles, ...
  • Copper indium sulfide colloidal quantum dot solar cells 

    So, David (Universitat Politècnica de Catalunya, 2016-10-19)
    Tesi
    Accés obert
    The ubiquity of solar energy conversion technology is an exciting target which we aspire for in this century. Colloidal quantum dot (CQD) solar cells are an attractive platform, being low-cost and allowing facile control ...

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