Continuous variable entanglement swapping and its local certification: entangling distant mechanical modes

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JournalPhys. Rev. A
DatePublished - 3 Dec 2013
Issue number89
Original languageEnglish

Abstract

We introduce a modification of the standard entanglement swapping protocol where the generation of entanglement between two distant modes is realized and verified using only local optical measurements. We show, indeed, that a simple condition on the purity of the initial state involving also an ancillary mode is sufficient to guarantee the success of the protocol by local measurements {M. Abdi \textit{et al.}, Phys. Rev. Lett. \textbf{109}, 143601 (2012)}]. We apply the proposed protocol to a tripartite optomechanical system where the never interacting mechanical modes become entangled and certified using only local optical measurements.

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12 pages, 3 figures

    Research areas

  • quant-ph, cond-mat.mes-hall, physics.optics

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