Entanglement reciprocation using three level atoms in a lambda configuration

F. C. Lourenco and A. Vidiella-Barranco (Universidade Estadual de Campinas, Brazil)
Arxiv ID: 0803.2863Last updated: 4/6/2021
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.

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