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Showing 10 out of a total of 17 results for community: Universitat Politècnica de Catalunya. (0.712 seconds)

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Characterizing and witnessing multipartite correlations : from nonlocality to contextuality

Sainz, Ana Belén (Date of defense: 10-02-2014)
In the past century, experimental discoveries have witnessed phenomena in Nature which challenge our everyday classical intuition. In order to explain these facts, quantum theory was developed, which so far has been able ...
From quantum foundations to quantum information protocols and back

Torre Carazo, Gonzalo de la (Date of defense: 23-09-2015)
Physics has two main ambitions: to predict and to understand. Indeed, physics aims for the prediction of all natural phenomena. Prediction entails modeling the correlation between an action, the input, and what is subsequently ...
Device-independent information protocols: measuring dimensionality, randomness and nonlocality

Gallego López, Rodrigo (Date of defense: 22-02-2013)
The device-independent formalism is a set of tools to analyze experimental data and infer properties about systems, while avoiding almost any assumption about the functioning of devices. It has found applications both in ...
Nonlocality in multipartite correlation networks

Würflinger, Lars Erik (Date of defense: 18-09-2013)
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 ...
Entanglement and non local correlations: quantum resources for information processing

Prettico, Giuseppe (Date of defense: 18-01-2013)
Quantum Information Theory (QIT) studies how information can be processed and transmitted when encoded on quantum states. Practically, it can be understood as the effort to generalize Classical Information Theory to the ...
Impact of imperfections on correlation-based quantum information protocols

Passaro, Elsa (Date of defense: 30-05-2016)
Quantum information science is a rapidly evolving field both from the theoretical and the experimental viewpoint, motivated by the fact that protocols exploiting quantum resources can perform tasks that are unfeasible in ...
Experimental tools for quantum networking operations with single photons and sinlge ions

Huwer, Jan Henning (Date of defense: 29-01-2014)
One promising approach for future quantum networks is the combination of strings of trapped ions as quantum-information processors with entangled photon pairs produced by spontaneous parametric down conversion (SPDC) to ...
Nonlocal resources for quantum information tasks

Curchod, Florian John (Date of defense: 11-10-2018)
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 ...
Intrinsic randomness in non-local theories: quantification and amplification

Dhara, Chirag (Date of defense: 12-06-2013)
Quantum mechanics was developed as a response to the inadequacy of classical physics in explaining certain physical phenomena. While it has proved immensely successful, it also presents several features that severely ...
Quantifying randomness from Bell nonlocality

Bourdoncle, Boris (Date of defense: 13-02-2019)
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 ...