Quantum teleportation with a three-Bell-state analyzer.
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.
van Houwelingen
J A W
JA
Group of Applied Physics, University of Geneva, Rue de l'Ecole-de-Médecine 20 CH-1211 Genève 4, Switzerland. jeroen.vanhouwelingen@physics.unige.ch
Brunner
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N
Beveratos
A
A
Zbinden
H
H
Gisin
N
N