Entangling Operations and Their Implementation Using a Small Amount of Entanglement
J. I. Cirac, Wolfgang Dür, Barbara Kraus, Maciej Lewenstein · Physical Review Letters · 2001
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.