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Nature Research, Nature Nanotechnology, 3(4), p. 173-178, 2009

DOI: 10.1038/nnano.2008.404

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Engineering the coupling between molecular spin qubits by coordination chemistry

Journal article published in 2009 by Grigore A. Timco ORCID, Stefano Carretta, Filippo Troiani, Floriana Tuna, Robin J. Pritchard, Christopher A. Muryn, Eric J. L. McInnes, Alberto Ghirri, S. Carretta F Troiani F Tuna R J. Pritchard E J. L. McInnes A Ghirri A Candini P Santini G Amoretti M Affronte and R. E. P. Winpenny G. A. Timco, Andrea Candini ORCID, Paolo Santini, Giuseppe Amoretti, Marco Affronte, S. Carretta F Troiani F Tuna R J. Pritchard C A. Muryn E J. L. McInnes A Ghirri A Candini P Santini G Amoretti M Affronte R E. P. Winpenny G. A. Timco, Richard E. P. Winpenny and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The ability to assemble weakly interacting subsystems is a prerequisite for implementing quantum information processing and generating controlled entanglement. In recent years, molecular nanomagnets have been proposed as suitable candidates for qubit encoding and manipulation. In particular, antiferromagnetic Cr7Ni rings behave as effective spin-1/2 systems at low temperature and show long decoherence times. Here, we show that these rings can be chemically linked to each other and that the coupling between their spins can be tuned by choosing the linker. We also present calculations that demonstrate how realistic microwave pulse sequences could be used to generate maximally entangled states in such molecules.