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High-Fidelity Bidirectional Nuclear Qubit Initialization in SiC
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Hungarian Academic Science, Hungary.
University of Chicago, IL 60637 USA.
University of Chicago, IL 60637 USA.
University of Chicago, IL 60637 USA; IBM TJ Watson Research Centre, NY 10598 USA.
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2016 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 117, no 22, article id 220503Article in journal (Refereed) Published
Abstract [en]

Dynamic nuclear polarization (DNP) is an attractive method for initializing nuclear spins that are strongly coupled to optically active electron spins because it functions at room temperature and does not require strong magnetic fields. In this Letter, we theoretically demonstrate that DNP, with near-unity polarization efficiency, can be generally realized in weakly coupled electron spin-nuclear spin systems. Furthermore, we theoretically and experimentally show that the nuclear spin polarization can be reversed by magnetic field variations as small as 0.8 Gauss. This mechanism offers new avenues for DNP-based sensors and radio-frequency free control of nuclear qubits.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2016. Vol. 117, no 22, article id 220503
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-133387DOI: 10.1103/PhysRevLett.117.220503ISI: 000388630000005PubMedID: 27925750OAI: oai:DiVA.org:liu-133387DiVA, id: diva2:1060075
Note

Funding Agencies|Knut & Alice Wallenberg Foundation; Swedish Research Council (VR) [2015-04391]; Swedish Foundation for Strategic Research program SRL Grant [10-0026]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; Ministry of Education and Science of the Russian Federation [14.Y26.31.0005]; Swedish National Infrastructure for Computing [SNIC 2013/1-331, SNIC 2014/1-420]; "Lendulet program" of the Hungarian Academy of Sciences; NSF [EFMA-1641099]; UChicago NSF-MRSEC; AFOSR, AFOSR-MURI, ARO

Available from: 2016-12-27 Created: 2016-12-22 Last updated: 2017-11-29

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