Engineering near-infrared single-photon emitters with optically active spins in ultrapure silicon carbide

Please always quote using this URN: urn:nbn:de:bvb:20-opus-148502
  • Vacancy-related centres in silicon carbide are attracting growing attention because of their appealing optical and spin properties. These atomic-scale defects can be created using electron or neutron irradiation; however, their precise engineering has not been demonstrated yet. Here, silicon vacancies are generated in a nuclear reactor and their density is controlled over eight orders of magnitude within an accuracy down to a single vacancy level. An isolated silicon vacancy serves as a near-infrared photostable single-photon emitter, operatingVacancy-related centres in silicon carbide are attracting growing attention because of their appealing optical and spin properties. These atomic-scale defects can be created using electron or neutron irradiation; however, their precise engineering has not been demonstrated yet. Here, silicon vacancies are generated in a nuclear reactor and their density is controlled over eight orders of magnitude within an accuracy down to a single vacancy level. An isolated silicon vacancy serves as a near-infrared photostable single-photon emitter, operating even at room temperature. The vacancy spins can be manipulated using an optically detected magnetic resonance technique, and we determine the transition rates and absorption cross-section, describing the intensity-dependent photophysics of these emitters. The on-demand engineering of optically active spins in technologically friendly materials is a crucial step toward implementation of both maser amplifiers, requiring high-density spin ensembles, and qubits based on single spins.show moreshow less

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Metadaten
Author: F. Fuchs, B. Stender, M. Trupke, D. Simin, J. Pflaum, V. Dyakonov, G.V. Astakhov
URN:urn:nbn:de:bvb:20-opus-148502
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):Nature Communications
Year of Completion:2015
Volume:6
Issue:7578
Source:Nature Communications 6:7578 (2015). DOI: 10.1038/ncomms8578
DOI:https://doi.org/10.1038/ncomms8578
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 538 Magnetismus
Tag:4H; coherent control; defects; entanglement; nuclear magnetic resonance; phosphorus; qubits; room temperature; vacancy
Release Date:2018/11/14
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International