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  • Production of entanglement in Raman three-level systems using feedback

    Author(s)
    Stevenson, Ross N.
    Carvalho, Andre R. R.
    Hope, Joseph J.
    Griffith University Author(s)
    Ribeiro de Carvalho, Andre R.
    Year published
    2011
    Metadata
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    Abstract
    We examine the theoretical limits of the generation of entanglement in a damped coupled ion-cavity system using jump-based feedback. Using Raman transitions to produce entanglement between ground states reduces the necessary feedback bandwidth, but does not improve the overall effect of the spontaneous emission on the final entanglement. We find that the fidelity of the resulting entanglement will be limited by the asymmetries produced by vibrations in the trap, but that the concurrence remains above 0.88 for realistic ion trap sizes.We examine the theoretical limits of the generation of entanglement in a damped coupled ion-cavity system using jump-based feedback. Using Raman transitions to produce entanglement between ground states reduces the necessary feedback bandwidth, but does not improve the overall effect of the spontaneous emission on the final entanglement. We find that the fidelity of the resulting entanglement will be limited by the asymmetries produced by vibrations in the trap, but that the concurrence remains above 0.88 for realistic ion trap sizes.
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    Journal Title
    European Physical Journal D
    Volume
    61
    Issue
    2
    DOI
    https://doi.org/10.1140/epjd/e2010-10442-2
    Subject
    Quantum Physics not elsewhere classified
    Physical Sciences
    Publication URI
    http://hdl.handle.net/10072/342746
    Collection
    • Journal articles

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