Non Gaussian States
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Analise e geração de emaranhamento em sistemas de variaveis discreta e continua via atomos / Analysis and generation of entanglement in systems of continuous and discrete variables via atoms
In this thesis, we present two results of entanglement generation, both involving atom-radiation interaction. In the first part, we consider a scheme for generation of entangled states involving electronic states of two distant ions, each one placed in a cavity. A flying atom, that crosses these cavities, is responsible for the generation of entangled states
Publicado em: 2009
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2. DISSIPAÇÃO EM MODOS ACOPLADOS
The implementation of processes of Quantum Computation as well as the transmission and quantum information control in realistic physical systems, must take in account the effects of the coupling of the systems with the environment, represented by thermal reservoirs. In this work it is considered the study of the effects of the environment in the quantum prop
Publicado em: 2007
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3. Efeitos de superfície nas propriedades térmicas e dinâmicas de filmes de cristais líquidos esméticos. / Surface effects on the thermal and dynamical proprieties of smectic liquid crystal filmes.
The thermal and dynamical properties of free-standing films are strongly dependent on the boundary conditions and the presence of an external field. Using distinct theoretical models and the dynamic light scattering experimental setup, we study the surface and external field effects on the relaxation dynamics, fluctuation-induced interaction energy, and phas
Publicado em: 2007
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4. Semiclassical propagation of coherent states / Propagação semiclassica de estados coerentes
This thesis addresses di®erent aspects of the semiclassical propagation of coherent states. We have derived a general expression for the propagator connecting these states which, di®erently from previous formulae in the literature, is valid for packets of arbitrary widths. The result, obtained via functional integration, depends on classical trajectories i
Publicado em: 2005
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5. Levitação de estados estendidos em sistemas que apresentam efeito hall quântico
In this work the Ievitation of extended states in two dimensional electron systems in the presence of magnetic field is numerically investigated. Few years after the discovery of the Quantum Hall Effect, Laughlin and Khmelnitskii conjectured that the extended states at the Landau level centers shouId levitate in energy, rising above the Fermi energy, for van
Publicado em: 2001
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6. ANÁLISE DE DESEMPENHO DA MODULAÇÃO MULTI-H EM CANAIS NÃO LINEARES LIMITADOS EM FAIXA / PERFORMANCE OF MULTI-H MODULATION OVER NON-LINEAR, BAND LIMITED CHANNELS
Error correcting codes have been used in power limited digital communication systems to improve the system error probability performance. This performance improvement is obtained at the price of an expanded occupied bandwidth or a lower rate of information transmission. Integrated coding and modulation techniques allow an increased performance without this b
Publicado em: 1988