Journal
APPLIED PHYSICS EXPRESS
Volume 8, Issue 8, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.8.084401
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Funding
- ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office, Government of Japan)
- Project for Developing Innovation Systems from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
- Japan Society for the Promotion of Science (JSPS) [26220710]
- IARPA project Multi-Qubit Coherent Operations through Copenhagen University
- Yazaki Memorial Foundation for Science and Technology Research Grant
- Japan Prize Foundation Research Grant
- Advanced Technology Institute Research Grant
- Toyota Physical & Chemical Research Institute Scholars
- RIKEN Incentive Research Project
- Natural Science and Engineering Research Council of Canada (NSERC)
- JSPS
- Austrian Federal Government
- steirische Forschungsforderungsgesellschaft mbH
- steirische Wirtschaftsforderungsgesellschaft mbH, within the framework of the Austrian COMET Competence Centre Programme
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Tailoring spin coupling to electric fields is central to spintronics and spin-based quantum information processing. We present an optimal micromagnet design that produces appropriate stray magnetic fields to mediate fast electrical spin manipulations in nanodevices. We quantify the practical requirements for spatial field inhomogeneity and tolerance for misalignment with spins, and propose a design scheme to improve the spin-rotation frequency (to exceed 50 MHz in GaAs nanostructures). We then validate our design by experiments in separate devices. Our results will open a route to rapidly control solid-state electron spins with limited lifetimes and to study coherent spin dynamics in solids. (C) 2015 The Japan Society of Applied Physics
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