Multipartite asymmetric quantum cloning

Authors:S Iblisdir, A Acin, N J Cerf, R Filip, J Fiurasek, N Gisin
Journal:Physical Review A 72, 042328 (2005)
DOI:http://dx.doi.org/10.1103/PhysRevA.72.042328
Abstract:We investigate the optimal distribution of quantum information over multipartite systems in asymmetric settings. We introduce cloning transformations that take N identical replicas of a pure state in any dimension as input and yield a collection of clones with nonidentical fidelities. As an example, if the clones are partitioned into a set of M-A clones with fidelity F-A and another set of M-B clones with fidelity F-B, the trade-off between these fidelities is analyzed, and particular cases of optimal N → M-A+M-B cloning machines are exhibited. We also present an optimal 1 → 1+1+1 cloning machine, which is an example of a tripartite fully asymmetric cloner. Finally, it is shown how these cloning machines can be optically realized.
File:multiasymqcloning.pdf

BibTeX Source

@Article{Iblisdir2005,
  author =       "S. Iblisdir and A. Acin and N. J. Cerf and R. Filip and J. Fiurasek and N. Gisin",
  title =        "Multipartite asymmetric quantum cloning",
  journal =      "Physical Review A",
  year =         "2005",
  volume =       "72",
  pages =        "042328",
  number =       "4",
  abstract =     "We investigate the optimal distribution of quantum information over multipartite
                 systems in asymmetric settings. We introduce cloning transformations that take N
                 identical replicas of a pure state in any dimension as input and yield a collection
                 of clones with nonidentical fidelities. As an example, if the clones are
                 partitioned into a set of M-A clones with fidelity F-A and another set of M-B
                 clones with fidelity F-B, the trade-off between these fidelities is analyzed, and
                 particular cases of optimal N -> M-A+M-B cloning machines are exhibited. We also
                 present an optimal 1 -> 1+1+1 cloning machine, which is an example of a tripartite
                 fully asymmetric cloner. Finally, it is shown how these cloning machines can be
                 optically realized.",
  doi =          "10.1103/PhysRevA.72.042328",
  owner =        "cc",
  sn =           "1050-2947",
  timestamp =    "2010.08.20",
  ut =           "WOS:000232931800062",
}
publications/bib/iblisdir2005.txt · Last modified: 2010/09/15 10:44 by christoph
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