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Quantum storage and cloning of light states in EIT-like medium

By A. P. Alodjants and S. M. Arakelian

Abstract

In the paper we consider a new approach for storage and cloning of quantum information by three level atomic (molecular) systems in the presence of the electromagnetically induced transparency (EIT) effect. For that, the various schemes of transformation into the bright and dark polaritons for quantum states of optical field in the medium are proposed. Physical conditions of realization of quantum nondemolition (QND) storage of quantum optical state are formulated for the first time. We have shown that the best storage and cloning of can be achieved with the atomic ensemble in the Bose-Einstein condensation state. We discuss stimulated Raman two-color photoassociation for experimental realization of the schemes under consideration.Comment: 13 pages, 4 postscript figures, uses ws-ijmpb.cl

Topics: Quantum Physics
Publisher: 'World Scientific Pub Co Pte Lt'
Year: 2006
DOI identifier: 10.1142/S0217979206034145
OAI identifier: oai:arXiv.org:quant-ph/0609189

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