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Emaranhamento em sistemas de partículas indistinguíveis
(Universidade Federal de Minas GeraisUFMG, 2011-08-23)
In this work we studied the issue of quantification of entanglement in quantum systems performing a detailed analysis since its fundamental principles, i.e, the postulates of the theory of entanglement measures, and thus ...
Dinâmica do emaranhamento num sistema tripartite
(Universidade Federal de Minas GeraisUFMG, 2010-08-03)
The proposal of this work is to study the bipartite entanglement between two constituents of a tripartite closed system, in the sense that there is no energy loss. The system consists of a pair of two-level atoms with equal ...
Em busca de um entendimento completo acerca do emaranhamento
(Universidade Federal de Minas GeraisUFMG, 2006-03-31)
A great effort has been devoted to understand Quantum InformationTheory. This interest comes from the fact that this field has given us advanced methods to process and store information. Among these proposals we can cite ...
Emaranhamento em sistemas de dois qubits
(Universidade Federal de Minas GeraisUFMG, 2010-02-19)
Ambientalismo quântico: proteção global através de operações locais e transição quântico-clássico
(Universidade Federal de Minas GeraisUFMG, 2010-08-20)
Entanglement entropy production in the Dynamical Casimir Effect.
(Universidade Federal de Minas GeraisUFMG, 2019-03-01)
In this work, we investigate the production of entanglement entropy in the dynamical Casimir effect at parametric resonance. Symplectic techniques for the description of the time evolution of Gaussian states in bosonic ...
Entanglement entropy in quantum field theory
(Universidade Federal de Minas GeraisUFMG, 2019-02-22)
Quantum information has a wealth of applications in quantum eld theory stemming from the holographic paradigm. In this dissertation, we review techniques for computing the entanglement entropy of bosonic quantum elds in ...
When Bob cannot trust Allce: a semi-device-independent tale of quantum steering
(Universidade Federal de Minas GeraisUFMG, 2016-08-04)
$a Einstein-Podolsky-Rosen steering é uma forma de correlação quântica intermediária entre emaranhamento e não-localidade de Bell. Dado que Alice e Bob compartilham um estado quântico, diz-se que Alice pode steer Bob quando ...
Desemaranhamento de Qutrits
(Universidade Federal de Minas GeraisUFMG, 2009-03-31)
The interaction of entanglement system with the enviroment tends to degrade the entanglement. It has been shown that, for 2 . 2 system (two qubits) interacting with spontaneus emission reservoir there are essentially two ...
Engenharia de estados espaciais de dimensões híbridas
(Universidade Federal de Minas GeraisUFMG, 2016-03-04)
In recent decades, Parametric Down Conversion (PDC) has been the main method of production of entangled photonic quantum states, most often bipartite. Inaddition, the discretization (withinacertainrange) of transversal ...