Coherent control of single spins in silicon carbide at room temperature
2015 (English)In: Nature Materials, ISSN 1476-1122, E-ISSN 1476-4660, Vol. 14, no 2, 164-168 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
Nature Publishing Group , 2015. Vol. 14, no 2, 164-168 p.
IdentifiersURN: urn:nbn:se:liu:diva-114990DOI: 10.1038/NMAT4145ISI: 000348600200012PubMedID: 25437256OAI: oai:DiVA.org:liu-114990DiVA: diva2:794441
Funding Agencies|EU via SQUTEC; EU via SIQS; EU via QINVC; DARPA via QuASAR; Max Planck Society; DFG via SPP ; 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 ; NKBRP (973 Program) [2014CB848700]; NSFC 2015-03-112015-03-062015-03-25