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Experimental quantum teleportation

1997; Nature Portfolio; Volume: 390; Issue: 6660 Linguagem: Inglês

10.1038/37539

1476-4687

Dik Bouwmeester, Jian-Wei Pan, Klaus Mattle, Manfred Eibl, Harald Weinfurter, Anton Zeilinger,

Quantum Computing Algorithms and Architecture

Quantum teleportation — the transmission and reconstruction over arbitrary distances of the state of a quantum system — is demonstrated experimentally. During teleportation, an initial photon which carries the polarization that is to be transferred and one of a pair of entangled photons are subjected to a measurement such that the second photon of the entangled pair acquires the polarization of the initial photon. This latter photon can be arbitrarily far away from the initial one. Quantum teleportation will be a critical ingredient for quantum computation networks. Quantum teleportation is the transmission and reconstruction of the state of a quantum system - an idea that was demonstrated experimentally by Dik Bouwmeester and colleagues in 1997. As their principal teleportation resource, the team used a pair of entangled photons; to effect the teleportation, they initiated a measurement involving one photon of the pair and a third photon. As a consequence of this interaction, the state of polarization of the third photon was transferred perfectly to the second photon of the entangled pair. In principle, this process should work even if the teleportation takes place over an arbitrarily large distance.