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Experimental Demonstration of Four-Photon Entanglement and High-Fidelity Teleportation
Physical Review Letters
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 indoi:10.1103/physrevlett.86.4435 pmid:11384253 fatcat:enzbzkpqjzauzm7ylfryri5jdi