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Science 16 June 2000:
Vol. 288. no. 5473, pp. 2024 - 2028
DOI: 10.1126/science.288.5473.2024
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Reports

Step-by-Step Engineered Multiparticle Entanglement

Arno Rauschenbeutel, Gilles Nogues, Stefano Osnaghi, Patrice Bertet, Michel Brune, Jean-Michel Raimond, * Serge Haroche

After quantum particles have interacted, they generally remain in an entangled state and are correlated at a distance by quantum-mechanical links that can be used to transmit and process information in nonclassical ways. This implies programmable sequences of operations to generate and analyze the entanglement of complex systems. We have demonstrated such a procedure for two atoms and a single-photon cavity mode, engineering and analyzing a three-particle entangled state by a succession of controlled steps that address the particles individually. This entangling procedure can, in principle, operate on larger numbers of particles, opening new perspectives for fundamental tests of quantum theory.

Laboratoire Kastler Brossel, Département de Physique de l'Ecole Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France.
*   To whom correspondence should be addressed. E-mail: jmr{at}lkb.ens.fr

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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