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Continuous-variable dense coding by optomechanical cavities

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JournalPhysical Review A
DatePublished - 25 Oct 2013
Issue number4
Volume88
Original languageEnglish

Abstract

In this paper, we show how continuous-variable dense coding can be implemented using entangled light generated from a membrane-in-the-middle geometry. The mechanical resonator is assumed to be a high reflectivity membrane hung inside a high quality factor cavity. We show that the mechanical resonator is able to generate an amount of entanglement between the optical modes at the output of the cavity, which is strong enough to approach the capacity of quantum dense coding at small photon numbers. The suboptimal rate reachable by our optomechanical protocol is high enough to outperform the classical capacity of the noiseless quantum channel.

    Research areas

  • quant-ph

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