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 measurem...

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Bibliographic Details
Published in:Physical review letters 2006-04, Vol.96 (13), p.130502-130502, Article 130502
Main Authors: van Houwelingen, J A W, Brunner, N, Beveratos, A, Zbinden, H, Gisin, N
Format: Article
Language:English
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.96.130502