Guaranteed emergence of genuine entanglement in 3-qubit evolving systems

Multipartite entanglement has been shown to be of particular relevance for a better understanding and exploitation of the dynamics and flow of entanglement in multiparty systems. This calls for analysis aimed at identifying the appropriate processes that guarantee the emergence of multipartite entanglement in a wide range of scenarios. Here we carry on such analysis considering a system of two initially entangled qubits, one of which is let to interact with a third qubit according to an arbitrary unitary evolution. We establish necessary and sufficient conditions on the corresponding Kraus operators, to discern whether the evolved state pertains to either one of the classes of 3-qubit pure states that exhibit some kind of entanglement, namely biseparable, W-, and GHZ- genuine entangled classes. Our results provide a classification of the Kraus operators according to their capacity of producing 3-qubit entanglement, and pave the way for extending the analysis to larger systems and determining the particular interactions that must be implemented in order to create, enhance and distribute entanglement in a specific manner.Comment: Two new subsections included. Accepted for publication in The European Physical Journal

Conceptual Maps: A Resource for the Supported Learning in Technologies

Se describen las características fundamentales de los mapas conceptuales, se resalta su importancia como instrumento para la organización y sistematización de ideas y conocimientos y se ofrecen propuestas para su elaboración, especialmente vinculándolos al diseño y producción de materiales didácticos que sirvan de apoyo a diferentes modalidades de aprendizaje apoyadas en las tecnologías de la información y la comunicación.This paper describes the fundamental characteristics of conceptual maps, highlights its importance as an instrument for organization and sistematization of ideas and knowledge, and makes proposals for its construction, specially in connection with the design and production of educational stuff aimed at several information-technology supported learning modalities

Data protection in public sector: normative analysis of portuguese and brazilian legal orders

Considering that information technology penetrates all areas and domains of the public sector, it has to be considered the extension of the required regulation needed for warranting that this phenomenon becomes an advantage and not a threat. In this sense, this study has as aims to discuss certain aspects associated with fair use of emerging and disruptive technologies and (such as Artificial Intelligence, Internet of Things, Big Data) in the public sector. The emphasis may fall upon the treatment of this subject by traditional regulatory instances, such as Data Protection Regulation-GDPR, in the sense of enhancing the capacity of Governments to ensure privacy, data protection, and the protection of citizens.This work has been supported by FCT Fundação para a Ciência e Tecnologia within the Project Scope: UID/CEC/00319/2019