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Issue 42, 2016
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A scalable architecture for quantum computation with molecular nanomagnets

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A proposal for a magnetic quantum processor that consists of individual molecular spins coupled to superconducting coplanar resonators and transmission lines is carefully examined. We derive a simple magnetic quantum electrodynamics Hamiltonian to describe the underlying physics. It is shown that these hybrid devices can perform arbitrary operations on each spin qubit and induce tunable interactions between any pair of them. The combination of these two operations ensures that the processor can perform universal quantum computations. The feasibility of this proposal is critically discussed using the results of realistic calculations, based on parameters of existing devices and molecular qubits. These results show that the proposal is feasible, provided that molecules with sufficiently long coherence times can be developed and accurately integrated into specific areas of the device. This architecture has an enormous potential for scaling up quantum computation thanks to the microscopic nature of the individual constituents, the molecules, and the possibility of using their internal spin degrees of freedom.

Graphical abstract: A scalable architecture for quantum computation with molecular nanomagnets

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Publication details

The article was received on 05 Jul 2016, accepted on 21 Aug 2016 and first published on 22 Aug 2016

Article type: Paper
DOI: 10.1039/C6DT02664H
Citation: Dalton Trans., 2016,45, 16682-16693

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    A scalable architecture for quantum computation with molecular nanomagnets

    M. D. Jenkins, D. Zueco, O. Roubeau, G. Aromí, J. Majer and F. Luis, Dalton Trans., 2016, 45, 16682
    DOI: 10.1039/C6DT02664H

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