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Abstract: We investigate an intra-cavity coupled down-conversion scheme to generatequadripartite entanglement using concurrently resonant nonlinearities. Weverify that quadripartite entanglement is present in this system by calculatingthe output fluctuation spectra and then considering violations of optimizedinequalities of the van Loock-Furusawa type. The entanglement characteristicsboth above and below the oscillation threshold are considered. We also presentanalytic solutions for the quadrature operators and the van Loock-Furusawacorrelations in the undepleted pump approximation.



Author: S. L. W. Midgley, A. S. Bradley, O. Pfister, M. K. Olsen

Source: https://arxiv.org/



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