Approximate Quantum Cloning with Nuclear Magnetic Resonance

Holly K. Cummins; Claire Jones; Alistair Furze; Nicholas F. Soffe; Michele Mosca; Josephine M. Peach; Jonathan A. Jones

doi:10.1103/PhysRevLett.88.187901

Approximate Quantum Cloning with Nuclear Magnetic Resonance

Holly K. Cummins, Claire Jones, Alistair Furze, Nicholas F. Soffe, Michele Mosca, Josephine M. Peach, and Jonathan A. Jones

Phys. Rev. Lett. 88, 187901 – Published 17 April 2002

Abstract

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 Bužek 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.

Received 19 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.187901

Authors & Affiliations

Holly K. Cummins¹, Claire Jones², Alistair Furze², Nicholas F. Soffe³, Michele Mosca⁴, Josephine M. Peach², and Jonathan A. Jones^1,3,*

¹Centre for Quantum Computation, Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU, United Kingdom
²Dyson Perrins Laboratory, University of Oxford, South Parks Road, OX1 3QY, United Kingdom
³Oxford Centre for Molecular Sciences, Central Chemistry Laboratory, University of Oxford, South Parks Road, OX1 3QH, United Kingdom
⁴Department of Combinatorics and Optimization, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada