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Identification and tunable optical coherent control of transition-metal spins in silicon carbide
Univ Groningen, Netherlands.
Univ Groningen, Netherlands.
Univ Groningen, Netherlands.
Univ Groningen, Netherlands.
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2018 (English)In: NPJ QUANTUM INFORMATION, ISSN 2056-6387, Vol. 4, article id 48Article in journal (Refereed) Published
Abstract [en]

Color centers in wide-bandgap semiconductors are attractive systems for quantum technologies since they can combine long-coherent electronic spin and bright optical properties. Several suitable centers have been identified, most famously the nitrogen-vacancy defect in diamond. However, integration in communication technology is hindered by the fact that their optical transitions lie outside telecom wavelength bands. Several transition-metal impurities in silicon carbide do emit at and near telecom wavelengths, but knowledge about their spin and optical properties is incomplete. We present all-optical identification and coherent control of molybdenum-impurity spins in silicon carbide with transitions at near-infrared wavelengths. Our results identify spin S= 1/2 for both the electronic ground and excited state, with highly anisotropic spin properties that we apply for implementing optical control of ground-state spin coherence. Our results show optical lifetimes of similar to 60 ns and inhomogeneous spin dephasing times of similar to 0.3 mu S, establishing relevance for quantum spin-photon interfacing.

Place, publisher, year, edition, pages
SPRINGERNATURE , 2018. Vol. 4, article id 48
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-152071DOI: 10.1038/s41534-018-0097-8ISI: 000446257600001OAI: oai:DiVA.org:liu-152071DiVA, id: diva2:1258321
Note

Funding Agencies|ERC Starting Grant [279931]; Zernike Institute BIS program; Swedish Research Council [VR 2016-04068, VR 2016-05362]; Carl-Trygger Stiftelse for Vetenskaplig Forskning grant [CTS 15:339]

Available from: 2018-10-24 Created: 2018-10-24 Last updated: 2018-12-06

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Citation style
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