Fast spin exchange across a multielectron mediator

Filip K. Malinowski; Frederico Martins; Thomas B. Smith; Stephen D. Bartlett; Andrew C. Doherty; Peter D. Nissen; Saeed Fallahi; Geoffrey C. Gardner; Michael J. Manfra; Charles M. Marcus; Ferdinand Kuemmeth

doi:10.1038/s41467-019-09194-x

Nature Communications (Mar 2019)

Fast spin exchange across a multielectron mediator

Filip K. Malinowski,
Frederico Martins,
Thomas B. Smith,
Stephen D. Bartlett,
Andrew C. Doherty,
Peter D. Nissen,
Saeed Fallahi,
Geoffrey C. Gardner,
Michael J. Manfra,
Charles M. Marcus,
Ferdinand Kuemmeth

Affiliations

Filip K. Malinowski: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Frederico Martins: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Thomas B. Smith: Centre for Engineered Quantum Systems, School of Physics, The University of Sydney
Stephen D. Bartlett: Centre for Engineered Quantum Systems, School of Physics, The University of Sydney
Andrew C. Doherty: Centre for Engineered Quantum Systems, School of Physics, The University of Sydney
Peter D. Nissen: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Saeed Fallahi: Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University
Geoffrey C. Gardner: Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University
Michael J. Manfra: Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University
Charles M. Marcus: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Ferdinand Kuemmeth: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen

DOI: https://doi.org/10.1038/s41467-019-09194-x
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 6

Abstract

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Controllable two-qubit interactions are necessary to build a functional quantum computer. Here the authors demonstrate fast, coherent swapping of two spin states mediated by a long, multi-electron quantum dot that could act as a tunable coupler mediating interactions between multiple qubits.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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