title: Coherent control of single spins in silicon carbide at room temperature.
abstract: Spins in solids are cornerstone elements of quantum spintronics. Leading contenders such as defects in diamond or individual phosphorus dopants in silicon have shown spectacular progress, but either lack established nanotechnology or an efficient spin/photon interface. Silicon carbide (SiC) combines the strength of both systems: it has a large bandgap with deep defects and benefits from mature fabrication techniques. 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.
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Widmann
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Sang-Yun
authors.initials: SY
authors.lastname: Lee
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Torsten
authors.initials: T
authors.lastname: Rendler
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.
authors.forename: Nguyen Tien
authors.initials: NT
authors.lastname: Son
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Helmut
authors.initials: H
authors.lastname: Fedder
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Seoyoung
authors.initials: S
authors.lastname: Paik
authors.affiliation: Beijing Computational Science Research Center, Beijing 100084, China.
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Yang
authors.affiliation: Beijing Computational Science Research Center, Beijing 100084, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Zhao
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Sen
authors.initials: S
authors.lastname: Yang
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.
authors.forename: Ian
authors.initials: I
authors.lastname: Booker
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Andrej
authors.initials: A
authors.lastname: Denisenko
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Jamali
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: S Ali
authors.initials: SA
authors.lastname: Momenzadeh
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Ilja
authors.initials: I
authors.lastname: Gerhardt
authors.affiliation: Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Ohshima
authors.affiliation: 1] Wigner Research Centre for Physics, Hungarian Academy of Sciences, PO Box 49, H-1525, Budapest, Hungary [2] Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary.
authors.forename: Adam
authors.initials: A
authors.lastname: Gali
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.
authors.forename: Erik
authors.initials: E
authors.lastname: Janzén
authors.affiliation: 3rd Institute of Physics and Research Center SCOPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Wrachtrup