Exploració per tema "Quàntums, Teoria dels"
Ara es mostren els items 38-57 de 130
-
Física cuántica : interferencias, correlaciones y realidad
(Iniciativa Digital Politècnica, 2015)
Llibre
Accés restringit a la comunitat UPCLa física cuántica se ha erigido como uno de los pilares fundamentales sobre los cuales se asienta la física moderna. Es una puerta a un mundo fascinante, de características sorprendentes; un microcosmos regido por la ... -
Física e informática
(2005-09)
Article
Accés obert -
From poly(3,4-ethylenedioxythiophene) to poly(3,4-phenylenedioxythiophene) : impact of the ethylene bridge by the phenyl ring in the molecular propierties
(Universitat Politècnica de Catalunya, 2010-09)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThe structural and electronic properties of poly(3,4-phenylenedioxythiophene) and poly(3,4- ethylenedioxythiophene) have been studied using quantum mechanical methods. Calculations have been performed considering a series ... -
Galoisian approach to supersymmetric quantum mechanics
(Universitat Politècnica de Catalunya, 2009-07-02)
Tesi
Accés obertEsta tesis versa sobre el punto de vista desde la Teoría de Galois Diferencial hacia la mecánica cuántica supersimétrica. El objeto principal considerado aquí es la ecuación deSchrödinger estacionaria no relativista, ... -
Ground-state wave-function optimization for a quantum system of N bosons
(Universitat Politècnica de Catalunya, 2020-06-29)
Treball Final de Grau
Accés obertAquest treball s'emmarca en el camp de l'estudi i simulació del comportament de sistemes quàntics complexos, les propietats dels quals vénen dictades per les lleis de la física quàntica. Aquestes juguen un paper fonamental ... -
Highly efficient noise-assisted energy transport in classical oscillator systems
(2013-05)
Article
Accés obertPhotosynthesis is a biological process that involves the highly-efficient transport of energy captured from the sun to a reaction center, where conversion into useful biochemical energy takes place. Even though one can ... -
Holographic imaging of nanometer-scale phase-separation during a phase transition
(Universitat Politècnica de Catalunya, 2019-09-09)
Projecte Final de Màster Oficial
Accés obertQuantum materials is a broad term used in condensed matter physics to define materials whose collective properties are governed by quantum behavior, which are challenging to understand. These materials are sensitive 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 ... -
Inequivalence of entanglement, steering, and Bell nonlocality for general measurements
(APS, 2015-09-08)
Article
Accés obertEinstein-Podolsky-Rosen steering is a form of inseparability in quantum theory commonly acknowledged to be intermediate between entanglement and Bell nonlocality. However, this statement has so far only been proven for a ... -
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 ... -
Klein's paradox and the relativistic d-shell interaction in R3
(Mathematical Sciences Publishers, 2017-12-20)
Article
Accés obertUnder certain hypotheses of smallness on the regular potential V, we prove that the Dirac operator in Unexpected text node: 'R', coupled with a suitable rescaling of V, converges in the strong resolvent sense to the ... -
Large-scale cuantum computing simulation using tensor networks
(Universitat Politècnica de Catalunya, 2021-06-29)
Projecte Final de Màster Oficial
Accés obertResource usage of traditional quantum computing simulation techniques scale exponentially fast either with the number of qubits or the depth of the circuit. Simulations of medium-sized circuits are then intractable but ... -
Llenguatges de Programació Quàntica
(Universitat Politècnica de Catalunya, 2009-06)
Projecte/Treball Final de Carrera
Accés obertAprofundir en els coneixements de computació quàntica, tant des del vessant de la física com des del vessant de la teoria de la computació, que em situïn en un punt de "pre-recerca". Tenir un mapa de les diferents ... -
Local discrimination of rotationally invariant states
(Universitat Politècnica de Catalunya / Universitat Autònoma de Barcelona, 2010)
Projecte Final de Màster Oficial
Accés obertWe provide lower bounds for the minimum error discrimination probability of multipartite rotationally invariant states using separable measurements. The separability of the measurement operators has been investigated, ... -
Loophole-free Bell inequality violation using electron spins separated by 1.3 kilometres
(Nature Publishing Group, 2015-10-21)
Article
Accés restringit per política de l'editorialMore than 50 years ago1, John Bell proved that no theory of nature that obeys locality and realism2 can reproduce all the predictions of quantum theory: in any local-realist theory, the correlations between outcomes of ... -
Macroscopic Quantum State Analyzed Particle by Particle
(ACS Publications, 2015-03-27)
Article
Accés obertMacroscopic quantum phenomena, e.g., superconductivity and squeezing, are believed to result from entanglement of macroscopic numbers of particles. We report the first direct study of this kind of entanglement: we use ... -
Many-body bound states and induced interactions of charged impurities in a bosonic bath
(2023-12-01)
Article
Accés obertInduced interactions and bound states of charge carriers immersed in a quantum medium are crucial for the investigation of quantum transport. Ultracold atom-ion systems can provide a convenient platform for studying this ... -
Matter Bounce Scenario in F(T) gravity
(2016)
Article
Accés obertIt is shown that teleparallel F(T) theories of gravity combined with holonomy corrected Loop Quantum Cosmology (LQC) support a Matter Bounce Scenario (MBS) which is a potential alternative to the inflationary paradigm. The ... -
Maximally Nonlocal Theories Cannot Be Maximally Random
(APS, 2015-04-22)
Article
Accés obertCorrelations that violate a Bell inequality are said to be nonlocal; i.e., they do not admit a local and deterministic explanation. Great effort has been devoted to study how the amount of nonlocality (as measured by a ... -
Methods for solving 1D Stefan problems with application to contact melting
(Universitat Politècnica de Catalunya, 2011-05)
Projecte Final de Màster Oficial
Accés obertContact melting is the process during which a phase change material is placed in contact with a substrate that is at a temperature above the phase change temperature. This leads to melting of the phase change material and ...