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Coherent control of single spins in silicon carbide at room temperature
University of Stuttgart, Germany; University of Stuttgart, Germany.
University of Stuttgart, Germany; University of Stuttgart, Germany.
University of Stuttgart, Germany; University of Stuttgart, Germany.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial. Linköpings universitet, Tekniska högskolan.
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2015 (Engelska)Ingår i: Nature Materials, ISSN 1476-1122, E-ISSN 1476-4660, Vol. 14, nr 2, s. 164-168Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Spins in solids are cornerstone elements of quantum spintronics(1). Leading contenders such as defects in diamond(2-5) or individual phosphorus dopants in silicon(6) have shown spectacular progress, but either lack established nanotechnology or an efficient spin/photon interface. Silicon carbide (SiC) combines the strength of both systems(5):it has a large bandgap with deep defects(7-9) and benefits from mature fabrication techniques(10-12). Here, we report the characterization of photoluminescence and optical spin polarization from single silicon vacancies in SiC, and demonstrate that single spins can be addressed at room temperature. We show coherent control of a single defect spin and find long spin coherence times under ambient conditions. Our study provides evidence that SiC is a promising system for atomic-scale spintronics and quantum technology.

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Nature Publishing Group , 2015. Vol. 14, nr 2, s. 164-168
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URN: urn:nbn:se:liu:diva-114990DOI: 10.1038/NMAT4145ISI: 000348600200012PubMedID: 25437256OAI: oai:DiVA.org:liu-114990DiVA, id: diva2:794441
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Funding Agencies|EU via SQUTEC; EU via SIQS; EU via QINVC; DARPA via QuASAR; Max Planck Society; DFG via SPP [1601]; DFG via Forschergruppe [FOR1493]; Lendulet programme of the Hungarian Academy of Sciences; Hungarian OTKA grant [K101819, K106114]; Knut and Alice Wallenberg Foundation; Linkoping Linnaeus Initiative for Novel Functionalized Materials; Ministry of Education, Science, Sports and Culture in Japan [26286047]; NKBRP (973 Program) [2014CB848700]; NSFC [11121403]

Tillgänglig från: 2015-03-11 Skapad: 2015-03-06 Senast uppdaterad: 2017-12-04

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