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Emaranhamento e efeitos de interações no espaço-tempo em expansão
(Universidade Federal de Minas GeraisUFMG, 2017-04-11)
In this work we study the quantization of scalar and fermionic ?
Dinâmica de emaranhamento e geometria de estados quânticos
(Universidade Federal de Minas GeraisUFMG, 2011-03-18)
Emaranhamento: caracterização, manipulação e consequências
(Universidade Federal de Minas GeraisUFMG, 2005-04-15)
Entanglement is characterized, to the best knowledge of these days, from bipartite pure states to multipartite mixed states, and including the problems of di erent tensor product structures determination for a given quantum ...
Aspectos da dinâmica de emaranhamento em sistemas multipartidos e o interferômetro Mach-Zehnder com discriminador de que-caminho
(Universidade Federal de Minas GeraisUFMG, 2011-11-18)
We investigate aspects, in various contexts, of entanglement and the wave particle duality. We show that the dynamics of tripartite systems which interact via one excitation exchange leads to a direct connection between ...
Propriedades espaciais e de frequência e um estudo da pureza e fidelidade do estado quântico gerado na conversão paramétrica descendente em cristais uniaxiais
(Universidade Federal de Minas GeraisUFMG, 2010-03-19)
In this work we investigate the spatial and frequency properties of the two-photon estates generated by spontaneous parametric down- conversion in uniaxial crystals of arbitrary length. As a basic tool we use Fourier optics ...
Emaranhamento, dinâmica de não-equiíbrio e supercondutividade em sistemas de etétrons fortemente interagentes
(Universidade Federal de Minas GeraisUFMG, 2018-02-02)
The main goal of this thesis is the study of properties that emerge from the interaction between particles. (i) We describe many-body systems through quantities related to quantum information, (ii) study the nonequilibrium ...
Local quenches on quantum many body systems
(Universidade Federal de Minas GeraisUFMG, 2018-06-29)
In this thesis we have studied local quenches on quantum many body systems. We have investigated the variation of von Neumann entropy of subsystem reduced states of general many-body lattice spin systems due to local quantum ...
The parts and the whole: how the tensor product affects Quantum Theory
(Universidade Federal de Minas GeraisUFMG, 2016-09-01)
The aim of the present work is to use arguments from Graph Theory, Topology and Geometry, and Multi-Linear Algebra in order to show how the tensor product structure affects Quantum Theory. Saying with other words, we will ...
Quantumness of correlations in finite dimensional systems
(Universidade Federal de Minas GeraisUFMG, 2014-04-11)
Some phenomena are exclusive of quantum systems, in other words, there no exist counterpart in classical mechanics. Two examples extensively discussed in recent years are the quantum entanglement and quantum non locality, ...
Modulador espacial de luz para processos quânticos: algoritmo de Deutsch, concentração de emaranhamento e simulação desistemas quânticos abertos
(Universidade Federal de Minas GeraisUFMG, 2013-04-26)
In this thesis we demonstrate experimentally the implementation of quantum processes and simulation of complex dynamics, through the manipulation of a quantum system. Pairs of entangled photons generated by spontaneous ...