title: Operational Multipartite Entanglement Measures.
abstract: We introduce two operational entanglement measures that are applicable for arbitrary multipartite (pure or mixed) states. One of them characterizes the potentiality of a state to generate other states via local operations assisted by classical communication and the other characterizes the simplicity of generating the state at hand. We show how these measures can be generalized to two classes of entanglement measures. Moreover, we compute the new measures for pure few-partite systems and use them to characterize the entanglement contained in a three-qubit state. We identify the Greenberger-Horne-Zeilinger and W state as the most powerful pure three-qubit states regarding state manipulation.
authors.affiliation: Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria.
authors.forename: K
authors.initials: K
authors.lastname: Schwaiger
authors.affiliation: Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria.
authors.forename: D
authors.initials: D
authors.lastname: Sauerwein
authors.affiliation: Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Cuquet
authors.affiliation: Departamento de Matemáticas, Universidad Carlos III de Madrid, Leganés (Madrid) E-28911, Spain.
authors.forename: J I
authors.initials: JI
authors.lastname: de Vicente
authors.affiliation: Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria.
authors.forename: B
authors.initials: B
authors.lastname: Kraus