Phys. Rev. Lett. 88, 017903 (2001) [4 pages]Experimental Nonlocality Proof of Quantum Teleportation and Entanglement SwappingReceived 15 August 2001; published 18 December 2001 Quantum teleportation strikingly underlines the peculiar features of the quantum world. We present an experimental proof of its quantum nature, teleporting an entangled photon with such high quality that the nonlocal quantum correlations with its original partner photon are preserved. This procedure is also known as entanglement swapping. The nonlocality is confirmed by observing a violation of Bell’s inequality by 4.5 standard deviations. Thus, by demonstrating quantum nonlocality for photons that never interacted, our results directly confirm the quantum nature of teleportation. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.017903
DOI:
10.1103/PhysRevLett.88.017903
PACS:
03.67.Hk, 03.65.Ud, 42.50.Ct
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