Entanglement accumulation, retrieval, and concentration in cavity QED

Abstract

The ability to accumulate and retrieve entanglement in the fields of two remote cavities with pairs of two-level atoms is discussed. It is shown that this transfer and retrieval can be indeed ideal with a resonant interaction. The case of initial non-maximally entangled atomic pairs is also considered. This leads to the possibility of concentrating entanglement into a single pair at the retrieval stage. A teleportation protocol based on the same setup is presented. This makes possible teleportation with built-in entanglement concentration.

8 pages, 5 figs, 2 tables. To appear in PRA

References in corpus (1)

• Reconstruction of non-classical cavity field states with snapshots of their decoherence

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