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Multipartite asymmetric quantum cloning

Cerf, N. J.
Filip, R.
Fiurášek, J.
Published in Physical Review. A. 2005, vol. 72, no. 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 MA clones with fidelity FA and another set of MB clones with fidelity FB, the trade-off between these fidelities is analyzed, and particular cases of optimal N→MA+MB 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.
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IBLISDIR, Sofyan et al. Multipartite asymmetric quantum cloning. In: Physical Review. A, 2005, vol. 72, n° 4. https://archive-ouverte.unige.ch/unige:36766

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Deposited on : 2014-05-20

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