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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 optimise 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.

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/npjqi.2015.12

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Role:
Author


Publisher:
Springer Nature
Journal:
npj Quantum Information More from this journal
Volume:
1
Issue:
15012
Publication date:
2015-12-08
Acceptance date:
2015-09-14
DOI:
ISSN:
2056-6387


Keywords:
Pubs id:
pubs:686636
UUID:
uuid:bf5ee735-4194-45c8-8ed8-26db4e8d8a98
Local pid:
pubs:686636
Source identifiers:
686636
Deposit date:
2017-03-22

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