Experimental Four-photon Entanglement and High-fidelity Teleportation

Details Experimental Four-photon Entanglement and High-fidelity Teleportation Experimental Four-photon Entanglement and High-fidelity Teleportation

2001-04-09

arxiv.org/abs/quant-ph/0104047v1

Phys. Rev. Lett. 86, 4435-4438 (2001)

Physics

Quantum Physics

4 pages, 4 figures, Submitted to PRL

Scientific paper

10.1103/PhysRevLett.86.4435

We experimentally demonstrate observation of highly pure four-photon GHZ entanglement produced by parametric down-conversion and a projective measurement. At the same time this also demonstrates teleportation of entanglement with very high purity. Not only does the achieved high visibility enable various novel tests of quantum nonlocality, it also opens the possibility to experimentally investigate various quantum computation and communication schemes with linear optics. Our technique can in principle be used to produce entanglement of arbitrarily high order or, equivalently, teleportation and entanglement swapping over multiple stages.

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