# A posteriori teleportation

@article{Braunstein1998APT,
title={A posteriori teleportation},
author={Samuel L. Braunstein and Harry J. Kimble},
journal={Nature},
year={1998},
volume={394},
pages={840-841}
}
• Published 27 August 1998
• Physics
• Nature
The article by Bouwmeester et al. on experimental quantum teleportation constitutes an important advance in the burgeoning field of quantum information. The experiment was motivated by the proposal of Bennett et al. in which an unknown quantum state is ‘teleported’ by Alice to Bob. As illustrated in Fig. 1, in the implementation of this procedure by Bouwmeester et al., an input quantum state is ‘disembodied’ into quantum and classical components, as in the original protocol. However, in…
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It is shown that during teleportation, 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.

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An unknown quantum state \ensuremath{\Vert}\ensuremath{\varphi}〉 can be disassembled into, then later reconstructed from, purely classical information and purely nonclassical Einstein-Podolsky-Rosen