Contribuições em teleportação de portas quânticas, algoritmos de busca quântica e processamento quântico de imagens

• Ano de defesa: 2018
• Autor(a) principal: Sousa, Paulo Regis Menezes
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Teleinformática; Processamento de imagens; Quantum gate teleportation; Quantum search algorithm; Quantum image processing
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/37344

This thesis presents, initially, an analysis of the teleportation protocol of two qubits quantum gates, which uses an four qubits entangled state as a resource. It will be shown that the set of four qubits pure states is divided into two classes: Class 1 and Class 2, which determine, respectively, the realization of a deterministic gate teleportation, or a probabilistic remote preparation. It is still shown that when there is additional information on search problems that are not applicable to a standard quantum search algorithm, it is possible to obtain better performance using a quantum algorithm in conjunction with a classical search algorithm. Finally, a new model of image representation in quantum states is proposed, the new model has a less complex preparation and recovery compared to the other models currently proposed and allows the processing of images in both gray and colored scales.