title: Quantum teleportation with a three-Bell-state analyzer.
abstract: We present a novel Bell-state analyzer (BSA) for time-bin qubits allowing the detection of three out of four Bell states with linear optics, two detectors, and no auxiliary photons. The theoretical success rate of this scheme is 50%. Our new BSA demonstrates the power of generalized quantum measurements, known as positive operator valued measurements. A teleportation experiment was performed to demonstrate its functionality. We also present a teleportation experiment with a fidelity larger than the cloning limit.
authors.affiliation: Group of Applied Physics, University of Geneva, Rue de l'Ecole-de-Médecine 20 CH-1211 Genève 4, Switzerland. jeroen.vanhouwelingen@physics.unige.ch
authors.forename: J A W
authors.initials: JA
authors.lastname: van Houwelingen
authors.forename: N
authors.initials: N
authors.lastname: Brunner
authors.forename: A
authors.initials: A
authors.lastname: Beveratos
authors.forename: H
authors.initials: H
authors.lastname: Zbinden
authors.forename: N
authors.initials: N
authors.lastname: Gisin