Photon-induced entanglement of distant mesoscopic SQUID rings

Abstract

An experiment that involves two distant mesoscopic SQUID rings is studied. The superconducting rings are irradiated with correlated photons, which are produced by a single microwave source. Classically correlated (separable) and quantum mechanically correlated (entangled) microwaves are considered, and their effect on the Josephson currents is quantified. It is shown that the currents tunnelling through the Josephson junctions in the distant rings, are correlated.

9 pages, 3 figures; Kluwer Academic Proceedings; presented in IV international workshop on "Macroscopic Quantum Coherence and Computing" (Napoli, Italy, 2004)

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