Now showing items 21-30 of 30

    • Nonlocality in multipartite correlation networks 

      Würflinger, Lars Erik (Universitat Politècnica de Catalunya, 2013-09-18)
      Doctoral thesis
      Open Access
      Despite the success of quantum mechanics in predicting the outcomes of experiments in many branches of physics, the foundations of the theory have remained subject of research and dispute. At the basis of this struggle ...
    • Quantifying randomness from Bell nonlocality 

      Bourdoncle, Boris (Universitat Politècnica de Catalunya, 2019-02-13)
      Doctoral thesis
      Open Access
      The twentieth century was marked by two scientific revolutions. On the one hand, quantum mechanics questioned our understanding of nature and physics. On the other hand, came the realisation that information could be treated ...
    • Quantum computing by interrogation 

      Supic, Ivan (Universitat Politècnica de Catalunya, 2014-09-09)
      Master thesis
      Open Access
      [ANGLÈS] Quantum information theory forms a bridge between the foundations of quantum mechanics and its promising practical potentials. The extensive theoretical research has been conducted during the last decades and the ...
    • Quantum information outside quantum information 

      Pozas Kerstjens, Alejandro (Universitat Politècnica de Catalunya, 2019-10-15)
      Doctoral thesis
      Open Access
      Quantum theory, as counter-intuitive as a theory can get, has turned out to make predictions of the physical world that match observations so precisely that it has been described as the most accurate physical theory ever ...
    • Quantum information with black boxes : lifting protocols from theory to implementation 

      Máttar Flores, Alejandro (Universitat Politècnica de Catalunya, 2017-10-17)
      Doctoral thesis
      Open Access
      According to recent estimates, 10^18 bytes of data are generated on a daily basis around the globe. Our information society urges for radical solutions to treat such data deluge. By exploiting fundamental key elements of ...
    • Quantum multipartite entangled states, classical and quantum error correction 

      Raissi, Zahra (Universitat Politècnica de Catalunya, 2020-10-08)
      Doctoral thesis
      Open Access
      Studying entanglement is essential for our understanding of such diverse areas as high-energy physics, condensed matter physics, and quantum optics. Moreover, entanglement allows us to surpass classical physics and ...
    • Quantum random number generation based on vacuum field fluctuations 

      Abellán, Carlos, 1990- (Universitat Politècnica de Catalunya, 2013-09-09)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] Random numbers are extensively used in a broad range of applications. Nevertheless, there are two main markets from a commercial point of view: (i) secure communications and (ii) stochastic simulation. According ...
    • Secrecy extraction from no-signalling correlations 

      Pino Paulino, Sergi (Universitat Politècnica de Catalunya, 2016-06)
      Master thesis (pre-Bologna period)
      Open Access
      Quantum cryptography studies tasks in Quantum Information Theory for cryptographic purposes, that is, for secret generation between parts from the principles of quantum mechanics. The fact itself, that quantum correlations ...
    • Simulating quantum measurements and quantum correlations 

      Guerini de Souza, Leonardo (Universitat Politècnica de Catalunya, 2018-01-29)
      Doctoral thesis
      Open Access
      Covenantee:   Universidade Federal de Minas Gerais
      This PhD thesis is focused on the quantum measurement simulability problem, that is, deciding whether a given measurement can be simulated when only a restricted subset of measurements is accessible. We provide an operational ...
    • Thermodynamics and quantum correlations 

      Perarnau Llobet, Martí (Universitat Politècnica de Catalunya, 2016-06-06)
      Doctoral thesis
      Open Access
      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 ...