Journal
EUROPHYSICS LETTERS
Volume 67, Issue 6, Pages 881-886Publisher
E D P SCIENCES
DOI: 10.1209/epl/i2004-10147-0
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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.
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