1. Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas, 13083, Campinas S?o Paulo, Brazil
Abstract:
We propose a scheme in which entanglement can be transferred from atoms (discrete variables) to
entangled states of cavity fields (continuous variables). The cavities play the role of a kind of quantum memory for
entanglement, in such a way that it is possible to retrieve it back to the atoms. In our method, two
three level atoms in a lambda configuration, previously entangled, are set to interact with
single mode cavity fields prepared in coherent states. During the process, one e-bit of entanglement may be
deposited in the cavities in an efficient way. We also show that the stored entanglement may be transferred back
to flying atoms.