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  • Unconditional entanglement interface for quantum networks

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    Kocsis67021-Accepted.pdf (686.8Kb)
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    Accepted Manuscript (AM)
    Author(s)
    Baune, Christoph
    Gniesmer, Jan
    Kocsis, Sacha
    Vollmer, Christina E.
    Zell, Petrissa
    Fiurasek, Jaromir
    Schnabel, Roman
    Griffith University Author(s)
    Kocsis, Sacha
    Year published
    2016
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    Abstract
    Entanglement drives nearly all proposed quantum information technologies. By up-converting part of a 1550 nm two-mode squeezed vacuum state to 532 nm, we demonstrate the generation of strong continuous-variable entanglement between widely separated frequencies. Nonclassical correlations were observed in joint quadrature measurements of the 1550 and 532 nm fields, showing a maximum noise suppression 5.5 dB below vacuum. Our versatile technique combines strong nonclassical correlations, large bandwidth, and in principle, the ability to entangle the telecommunication wavelength of 1550 nm with any optical wavelength.Entanglement drives nearly all proposed quantum information technologies. By up-converting part of a 1550 nm two-mode squeezed vacuum state to 532 nm, we demonstrate the generation of strong continuous-variable entanglement between widely separated frequencies. Nonclassical correlations were observed in joint quadrature measurements of the 1550 and 532 nm fields, showing a maximum noise suppression 5.5 dB below vacuum. Our versatile technique combines strong nonclassical correlations, large bandwidth, and in principle, the ability to entangle the telecommunication wavelength of 1550 nm with any optical wavelength.
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    Journal Title
    Physical Review A
    Volume
    93
    DOI
    https://doi.org/10.1103/PhysRevA.93.010302
    Copyright Statement
    © 2016 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Physical Sciences not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/184860
    Collection
    • Journal articles

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