D'Ariano, G. MauroParis, Matteo G. A.Presti, Paoloplacido Lo2004-12-032004-12-0320012001http://hdl.handle.net/2003/199910.17877/DE290R-11692enThe American Physical SocietyPhysical Review Letters530Using Entanglement Improves the Precision of Quantum Measurements10.1103/PhysRevLett.87.270404article (journal)