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",
}