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Experimental teleportation of quantum entanglement with an optimal linear optics Bell-state analyzer

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arxiv quant-ph/0409008 v1 pith:Z7VDVAF2 submitted 2004-09-01 quant-ph

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keywords entanglementphotonsbellbell-stateentangledfinallinearmeasurement
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We demonstrate an experiment on entanglement swapping using an optimal Bell-state measurement capable of identifying two of the four Bell-states for polarization entangled photons, which is the optimum with linear optical elements. The two final photons belong to separately created paris. They are entangled after their original partner photons have been subjected to the Bell state measurement, whose outcome determines the type of entanglement of the final photon pair. The resulting violation of Bell's inequality in both cases confirms the success of the teleportation protocol.

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