The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

A three-level system can be used in a Λ-type configuration in order to construct a universal
set of quantum gates through the use of non-Abelian nonadiabatic geometrical phases …

We study the geometric phase (GP) of a two-level atom coupled to an environment
composed of free space and a dielectric nanosphere in thermal and out of thermal …

Superconducting circuits reveal themselves as promising physical devices with multiple
uses. Within those uses, the fundamental concept of the geometric phase accumulated by …

We investigated the mixed state geometric phase of a two-level system which is coupled to a
bosonic reservoir in both weak and strong coupling regimes, and driven by a classical field …

In this thesis we deal with two different topics. In the first half we investigate how the
Bayesian formalism can be introduced into the problem of quantum thermometry--a field …

We introduce a dynamical system that instead of exchanging a single photon as in the
atomic system of the usual Jaynes-Cummings model (JCM), it exchanges instead a …

We performed a theoretical study of the dephasing dynamics of a quantum two-state system
under the influences of a non-equilibrium fluctuating environment. The effect of the …

Realizamos, nesta dissertação, uma investigação a respeito de dois tópicos distintos.
Inicialmente lidamos com o formalismo Bayesiano e com o desafio de como introduzi-lo na …