title: Entangling operations and their implementation using a small amount of entanglement.
abstract: We study when a physical operation can produce entanglement between two systems initially disentangled. The formalism we develop allows us to show that one can perform certain nonlocal operations with unit probability by performing local measurement on states that are weakly entangled.
authors.affiliation: Institut für Theoretische Physik, Universität Innsbruck, Austria.
authors.forename: J I
authors.initials: JI
authors.lastname: Cirac
authors.forename: W
authors.initials: W
authors.lastname: Dür
authors.forename: B
authors.initials: B
authors.lastname: Kraus
authors.forename: M
authors.initials: M
authors.lastname: Lewenstein