Work

Strain-enabled control of the vanadium qudit in silicon carbide

Year: 2025

Type: article

Abstract: Vanadium in silicon carbide is a promising spin photon interface candidate with optical transitions in the telecom range and a long lived electron spin, hosted in an advanced semiconductor platform. In this detailed investigation of the defect's 16-dimensional ground state spin manifold at millikelvin temperatures, a wide range of previously unreported transitions are observed which are accurately described using a theoretical model that includes strain. Using a superconducting microcoil we achieve Rabi frequencies exceeding 20 MHz and perform the first coherent manipulation of a direct hyperfine transition. These insights further underscore the defect's potential for strain engineering and sensing, as well as for fault-tolerant qudit encoding.

Source: Physical Review Materials

DOI: 10.1103/physrevmaterials.9.l043201

Authors: Philipp Koller, Thomas Astner, Benedikt Tissot, Guido Burkard, Michael Trupke

Institutions: University of Vienna, Austrian Academy of Sciences, University of Copenhagen, University of Konstanz

Language: English

Topic: Diamond and Carbon-based Materials Research

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, Ministerstvo Školství, Mládeže a Tělovýchovy, Österreichische Forschungsförderungsgesellschaft, Central European Institute of Technology