Volume 67, Number 6, September 2004
|Page(s)||881 - 886|
|Published online||01 September 2004|
Entanglement storage in atomic ensembles
Laboratoire Kastler Brossel, Université Pierre et Marie Curie 4 place Jussieu, 75252 Paris Cedex 05, France
Accepted: 19 July 2004
We propose to entangle macroscopic atomic ensembles in cavity using EPR-correlated beams. We show how the field entanglement can be almost perfectly mapped onto the long-lived atomic spins associated with the ground states of the ensembles, and how it can be retrieved in the fields exiting the cavities after a variable storage time. Such a continuous variable quantum memory is of interest for manipulating entanglement in quantum networks.
PACS: 03.67.-a – Quantum information / 03.67.Mn – Entanglement production, characterization and manipulation / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EDP Sciences, 2004
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