Engineering coherent interactions in molecular nanomagnet dimers
Abstract
Proposals for systems embodying condensed matter spin qubits cover a very wide range of length scales, from atomic defects in semiconductors all the way to micron-sized lithographically-defined structures. Intermediate scale molecular components exhibit advantages of both limits: like atomic defects, large numbers of identical components can be fabricated; as for lithographically defined structures, each component can be tailored to optimize properties such as quantum coherence. Here, we demonstrate what is perhaps the most potent advantage of molecular spin qubits, the scalability of quantum information processing structures using bottom-up chemical self-assembly. Using Cr7Ni spin qubit building blocks, we have constructed several families of two-qubit molecular structures with a range of linking strategies. For each family, long coherence times are preserved, and we demonstrate control over the inter-qubit quantum interactions that can be used to mediate two-qubit quantum gates.
Cite
@article{arxiv.1510.01694,
title = {Engineering coherent interactions in molecular nanomagnet dimers},
author = {Arzhang Ardavan and Alice M. Bowen and Antonio Fernandez and Alistair J. Fielding and Danielle Kaminski and Fabrizio Moro and Christopher A. Muryn and Matthew D. Wise and Albert Ruggi and Eric J. L. McInnes and Kay Severin and Grigore A. Timco and Christiane R. Timmel and Floriana Tuna and George F. S. Whitehead and Richard E. P. Winpenny},
journal= {arXiv preprint arXiv:1510.01694},
year = {2015}
}
Comments
Manuscript: 20 pages. Supplementary Information: 16 pages. npj Quantum Information, in press