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Structural properties of nanoscopic ring systems and their optical response
(Universidade Federal de São Carlos, 2016-03-30)
In this thesis, the electronic and structural properties of nanostructured systems were studied aiming to get a realistic model for quantum rings, potentially adaptable for quantum dots. To attain these goals, several ...
Estudo das propriedades ópticas de filmes finos e poços quânticos de GaAsPN/GaPN
(Universidade Federal de São Carlos, 2016-09-08)
Diluted nitride III-V semiconductor leagues have physical properties that make them
interesting for applications on optoelectronic devices. The possibility to lattice matching
GaAsPN with silicon makes this semiconductor ...
Emaranhamento intrínseco em sistemas tipo-Dirac
(Universidade Federal de São Carlos, 2018-03-06)
Dirac equation is supported by a $SU(2) \otimes SU(2)$ group structure, such that its solutions describe two discrete degrees of freedom, intrinsic parity and spin, which in general are entangled. In this work we will ...
Uma introdução à invariância conforme na Teoria das Cordas
(Universidade Federal de São Carlos, 2018-10-11)
In this work we study the formalism of Conformal Field Theory (CFT) and apply it to the theory of strings and superstrings. We also use the BRST quantization technique to obtain the string spectrum together with the ...
Análise de segurança de criptografia quântica baseada em teletransporte
(Universidade Federal de São Carlos, 2021-02-04)
We prove that the teleportation based quantum cryptography protocol presented in [Opt. Commun. 283, 184 (2010)], which is built using only orthogonal states encoding the classical bits that are teleported from Alice to ...
Nanofios de germânio : síntese, caracterização estrutural, propriedades elétricas e aplicações
(Universidade Federal de São Carlos, 2016-08-09)
The element germanium is part of the history of electronic equipment based on semiconductor
from its early days with the invention of the transistor, until today with current research
related to growth of germanium ...
Vidros: sólidos ou líquidos? Uma análise via simulação computacional
(Universidade Federal de São Carlos, 2019-10-10)
For many centuries there were different definitions of what glass would be, this discussion
persists to current days. Is glass a solid or liquid material? In this work, we answer this question
through computational ...
Formulações semiclássicas da mecânica quântica: uma análise do oscilador singular por meio do formalismo de Weyl-Wigner e trajetórias quânticas
(Universidade Federal de São Carlos, 2020-02-10)
The usual quantum mechanics formalism does not address relevant points of the semiclassical limit. In this work two theoretical approaches will be considered: Bohmian mechanics and the Weyl-Wigner formulation. The singular ...
Algoritmos quânticos para resolução de equações diferenciais: análise de complexidade e aplicabilidade
(Universidade Federal de São Carlos, 2022-02-11)
This work consists in a complexity analysis of an algorithm for solving differential equations,
which shares common characteristics with other algorithms designed for the same task.
Operations such as state preparation, ...
Electromagnetically induced transparency under effects of light-mediated interactions, entanglement generation, and Fock states detection
(Universidade Federal de São Carlos, 2022-10-25)
This thesis presents a brief compilation of the works developed during my doctorate, and can be divided basically into three main parts. In the first one, we show the changes caused by considering long-range interactions ...