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Approximate quantum cloning with nuclear magnetic resonance. 2002
Holly K Cummins, and
Claire Jones, and
Alistair Furze, and
Nicholas F Soffe, and
Michele Mosca, and
Josephine M Peach, and
Jonathan A Jones
Centre for Quantum Computation, Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU, United Kingdom.
Here we describe a nuclear magnetic resonance (NMR) experiment that uses a three qubit NMR device to implement the one-to-two approximate quantum cloning network of Buzek et al. [Phys. Rev. A 56, 3446 (1997)]. As expected the experimental results indicate that the network clones all input states with similar fidelities, but as a result of decoherence and incoherent evolution arising from B(1) inhomogeneity the total fidelity achieved does not exceed the measurement bound.
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