Troca de Emaranhamento e Teletransporte Controlado no contexto de rotações de Faraday fotônicas

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dc.contributor.advisor-co1Cardoso, Wesley Bueno
dc.contributor.advisor1Baseia, Basilio
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/5804506385505435por
dc.contributor.referee1Baseia, Basilio
dc.contributor.referee2Cardoso, Wesley Bueno
dc.contributor.referee3Mizrahi, Salomon Sylvain
dc.contributor.referee4Fonseca, Tertius Lima da
dc.creatorBastos, Wellison Peixoto
dc.creator.Latteshttp://lattes.cnpq.br/8816682211978973por
dc.date.accessioned2014-09-05T19:52:53Z
dc.date.available2014-09-05
dc.date.issued2011-03-04
dc.description.abstractTaking advantage of the Faraday rotations that occur in a photonic cristal placed in an optical cavity with low quality factor, we proposed two schemes to obtain the swapping of entanglement of atomic states, useful in quantum communication and quantum computation. They employ three-level atoms in a -configuration, a linearly polarized photon source, a single detector, and a quarter wave plate. Three (four) cavities are used in the first (second) scheme. An additional scheme was also proposed to obtain controlled teleportation of superposition states, partial controlled teleportation of entangled states and controlled teleportation of entanglement. In all schemes we have included the imperfections that affect the system, such as transmission and coupling of photons in optical components, the fraction of photons with a desired polarization, the quantum efficiency of single photon detection, the effective solid angle where the photon are collected, and the rate of emitted photons by the source. Under these realistic conditions we estimate the success probability of each proccess, including the time spent for its realization.eng
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dc.description.resumoAproveitando as rotações de Faraday que ocorrem em um cristal fotônico colocado em uma cavidade óptica com baixo fator de qualidade, propusemos dois esquemas para obter a troca de emaranhamento de estados atômicos, útil em comunicação quântica e computação quântica. Eles empregam átomos de três níveis em uma configuração, uma fonte de fótons com polarização linear, um único detector, e uma placa de quarto de onda. Três (quatro) cavidades são usadas no primeiro (segundo) esquema. Um método adicional foi também proposto para obter teletransporte controlado de estados de superposição, teletransporte parcial controlado de estados emaranhados e teletransporte controlado de estados emaranhados. Em todos os esquemas incluímos as imperfeições que afetam o sistema, tais como a transmissão e acoplamento de fótons em componentes ópticos, a fração de fótons com uma polarização desejada, a eficiência quântica da detecção de um único fóton, o ângulo sólido efetivo em que o fótons são coletados e a taxa de fótons emitidos pela fonte. Sob estas condições realistas, estimamos a probabilidade de sucesso de cada processo, incluindo o tempo gasto para sua realização.por
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESpor
dc.formatapplication/pdf*
dc.identifier.citationBastos, Wellison Peixoto - Troca de Emaranhamento e Teletransporte Controlado no contexto de rotações de Faraday fotônicas - 2011 - 82 f.- Dissertação - Programa de Pós-graduação em Fisica (IF) - Universidade Federal de Goiás - Goiânia - Goiás - Brasil.por
dc.identifier.urihttp://repositorio.bc.ufg.br/tede/handle/tde/3027
dc.languageporpor
dc.publisherUniversidade Federal de Goiáspor
dc.publisher.countryBrasilpor
dc.publisher.departmentInstituto de Física - IF (RG)por
dc.publisher.initialsUFGpor
dc.publisher.programPrograma de Pós-graduação em Fisica (IF)por
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dc.rightsAcesso abertopor
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectrotações de Faradaypor
dc.subjectcomunicação quânticapor
dc.subjectfótons – Teletransportepor
dc.subjectFaraday rotationseng
dc.subjectquantum communicationeng
dc.subjectphotons - teleportationeng
dc.subject.cnpqFISICA::FISICA GERALpor
dc.thumbnail.urlhttp://repositorio.bc.ufg.br/tede/retrieve/7260/Bastos%2c%20Wellison%20Peixoto%20-%202011.pdf.jpg*
dc.titleTroca de Emaranhamento e Teletransporte Controlado no contexto de rotações de Faraday fotônicaspor
dc.title.alternativeEntaglement swapping and controlled teleportation in the context of photonic Faraday rotationseng
dc.typeDissertaçãopor

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