Exploració per altres contribucions "Acín dal Maschio, Antonio"
Ara es mostren els items 15-34 de 40
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From quantum foundations to quantum information protocols and back
(Universitat Politècnica de Catalunya, 2015-09-23)
Tesi
Accés obertPhysics 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 ... -
Hierarchical representations in machine learning and many-body quantum physics
(Universitat Politècnica de Catalunya, 2017-10-27)
Projecte Final de Màster Oficial
Accés obertOver the past few years a number of proofs have emerged revealing the many connections between the methods used in quantum-many body physics and those in machine learning. In particular, much attention has been given to ... -
Impact of imperfections on correlation-based quantum information protocols
(Universitat Politècnica de Catalunya, 2016-05-30)
Tesi
Accés obertQuantum 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 ... -
Information-theoretical Secret-key agreement and Bound information
(Universitat Politècnica de Catalunya, 2009-02-25)
Projecte Final de Màster Oficial
Accés obertOne big problem of the communication between two parties is the secrecy. That means how much information a third party can obtain by intercepting the messages transmitted from one honest party to the other one. Therefore ... -
Intrinsic randomness in non-local theories: quantification and amplification
(Universitat Politècnica de Catalunya, 2013-06-12)
Tesi
Accés obertQuantum 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 ... -
Investigating quantum many-body systems with tensor networks, machine learning and quantum computers
(Universitat Politècnica de Catalunya, 2022-10-14)
Tesi
Accés obert(English) We perform quantum simulation on classical and quantum computers and set up a machine learning framework in which we can map out phase diagrams of known and unknown quantum many-body systems in an unsupervised ... -
Local temperature and correlations in quantum many-body systems
(Universitat Politècnica de Catalunya, 2019-04-12)
Tesi
Accés obertQuantum Mechanics was established as the theory of the microscopic world, which allowed to understand processes in atoms and molecules. Its emergence led to a new scientific paradigm that quickly spread to different research ... -
Machine learning for quantum physics and quantum physics for machine learning
(Universitat Politècnica de Catalunya, 2021-03-25)
Tesi
Accés obertResearch at the intersection of machine learning (ML) and quantum physics is a recent growing field due to the enormous expectations and the success of both fields. ML is arguably one of the most promising technologies ... -
Mathematical and Technological Aspects of Quantum Information Processing
(Universitat Politècnica de Catalunya, 2011-03)
Projecte Final de Màster Oficial
Accés obertSince its genesis, quantum mechanics has proved to be a very accurate model for predicting the behavior of the world below the nanoscale. However, crucial breakthroughs in technology were needed in order to be able to e ... -
Network nonlocality with continuous variables
(Universitat Politècnica de Catalunya, 2021-09-08)
Projecte Final de Màster Oficial
Accés obertSince the birth of quantum mechanics, quantum information theory has seen a rise due to the contradiction with classical models. Some new concepts have surged up from the application of quantum models to information theory, ... -
Nonlocal resources for quantum information tasks
(Universitat Politècnica de Catalunya, 2018-10-11)
Tesi
Accés obertThis 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 ... -
Nonlocality in multipartite correlation networks
(Universitat Politècnica de Catalunya, 2013-09-18)
Tesi
Accés obertDespite 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
(Universitat Politècnica de Catalunya, 2019-02-13)
Tesi
Accés obertThe 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 algorithms for state reconstruction
(Universitat Politècnica de Catalunya, 2013-09-09)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] We review quantum state reconstruction schemes. We also present a quantum state preparation method by means of single-qubit operations and controlled not (C-NOT) gates. We aim at finding new quantum circuit schemes ... -
Quantum computing by interrogation
(Universitat Politècnica de Catalunya, 2014-09-09)
Projecte Final de Màster Oficial
Accés obert[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 Error Correction - Decoders
(Universitat Politècnica de Catalunya, 2019-09-09)
Projecte Final de Màster Oficial
Accés obertError correction is used to correct any errors that may arise when sending any message, as errors are prone to appear due to noise. For classical codes, there are many decoders used, for example, belief propagation. ... -
Quantum information outside quantum information
(Universitat Politècnica de Catalunya, 2019-10-15)
Tesi
Accés obertQuantum 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
(Universitat Politècnica de Catalunya, 2017-10-17)
Tesi
Accés obertAccording 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
(Universitat Politècnica de Catalunya, 2020-10-08)
Tesi
Accés obertStudying 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
(Universitat Politècnica de Catalunya, 2013-09-09)
Projecte/Treball Final de Carrera
Accés obert[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 ...
