Storage and distribution of quantum information are key elements of quantum information processing and quantum communication. Here, using atom-photon entanglement as the main physical resource, we experimentally demonstrate the preparation of a distant atomic quantum memory. Applying a quantum teleportation protocol on a locally prepared state of a photonic qubit, we realized this so-called remote state preparation on a single, optically trapped 87Rb atom. We evaluated the performance of this scheme by the full tomography of the prepared atomic state, reaching an average fidelity of 82%.
@article{arxiv.quant-ph/0608229,
title = {Remote preparation of an atomic quantum memory},
author = {Wenjamin Rosenfeld and Stefan Berner and Juergen Volz and Markus Weber and Harald Weinfurter},
journal= {arXiv preprint arXiv:quant-ph/0608229},
year = {2009}
}