Approximate quantum cloning with nuclear magnetic resonance.
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.
Cummins
Holly K
HK
Centre for Quantum Computation, Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU, United Kingdom.
Jones
Claire
C
Furze
Alistair
A
Soffe
Nicholas F
NF
Mosca
Michele
M
Peach
Josephine M
JM
Jones
Jonathan A
JA