2020/04/14 by Fei‐Fei Yan, Fei-Fei Yan, Ailun Yi +29 · 1 citation
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Annealing (glass) #Applied Physics (physics.app-ph) #Chemistry #Condensed matter physics #Diamond and Carbon-based Materials Research #Electron paramagnetic resonance #FOS: Physical sciences #Ion #Ion implantation #Materials science #Metallurgy #Nanolithography #Nuclear magnetic resonance #Optoelectronics #Physics #Quantum #Quantum Physics (quant-ph) #Quantum technology #Qubit #Semiconductor materials and devices #Silicon #Silicon Carbide Semiconductor Technologies #Silicon carbide #Spins #Vacancy defect #physics.app-ph #quant-ph
paper · pdf · doi:10.48550/arxiv.2004.06261
published in arXiv (Cornell University) (Cornell University) · 15 pages, 4 figures
arxiv created 2020/04/14 · openalex publication_date 2020/04/14 · arxiv updated 2020/04/15 · openalex created_date 2020/04/24 · openalex updated_date 2026/08/06
Recently, vacancy-related spin defects in silicon carbide (SiC) have been demonstrated to be potentially suitable for versatile quantum interface building and scalable quantum network construction. Significant efforts have been undertaken to identify spin systems in SiC and to extend their quantum capabilities using large-scale growth and advanced nanofabrication methods. Here we demonstrated a type of spin defect in the 4H polytype of SiC generated via hydrogen ion implantation with high-temperature post-annealing, which is different from any known defects. These spin defects can be optically addressed and coherently controlled even at room temperature, and their fluorescence spectrum and optically detected magnetic resonance spectra are different from those of any previously discovered defects. Moreover, the generation of these defects can be well controlled by optimizing the annealing temperature after implantation. These defects demonstrate high thermal stability with coherently controlled electron spins, facilitating their application in quantum sensing and masers under harsh conditions.