Quantum information

Quantum Information Theory is mainly devoted to the study of the manipulation and storage of information in quantum mechanical systems. Quantum entangled systems have been shown to be of special interest in such task. Quantum entanglement is a quantum phenomenon according to which quantum states composed by two or more components are correlated is such a way that the state of one of the subsystems cannot be completely determined without taking into account the rest of the system. Entanglement constitutes a physical resource that lies at the heart of important information processes such as quantum teleportation, superdense coding, and quantum computation. We have deeply studied the characterisation and quantification of entanglement in bipartite systems and currently our main interest is devoted to the study of highly entangled multiqubit states, with special interest on their robustness under different decoherence processes.