DFG-RSF: Polytype and isotope engineering of silicon carbide for quantum microwave amplifiers
Final Report Abstract
Here, we have developed the fundamentals and the layout of a future maser device and finally demonstrated the microwave generation in optical pumping of silicon defects in SiC for the first time. This was based on a systematic evaluation of the influences of numerous factors on the inversion population within the high-spin system, in particular careful defect engineering, investigation of the spin-relaxation properties and a systematic development of the microwave resonator as well as the design of the microwave channel. Our research has led to 6 publications in high impact peer-reviewed journals, most of them in cooperation with Russian colleagues. Thus, the joint DFG-RSF project strengthened the bilateral cooperation, which is ongoing at a very high level, even though the exchange of staff is only possible virtually.
Publications
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Optical thermometry based on level anticrossing in silicon carbide, Sci. Rep. 6, 33301 (2016)
Anisimov, A. N.; Simin, D.; Soltamov, V. A.; Lebedev, S. P.; Baranov, P. G.; Astakhov, G. V. & Dyakonov, V.
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3D Proton Beam Writing of Optically Active Coherent Vacancy Spins in Silicon Carbide, Nano Letters 17, 2865-2870 (2017)
Kraus, H.; Simin, D.; Kasper, C.; Suda, Y.; Kawabata, S.; Kada, W.; Honda, T.; Hijikata, Y.; Ohshima, T.; Dyakonov, V. & Astakhov, G. V.
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Spin and Optical Properties of Silicon Vacancies in Silicon Carbide – A Review, Phys. Status Solidi B 255, 1700258 (2018)
Tarasenko, S. A.; Poshakinskiy, A. V.; Simin, D.; Soltamov, V. A.; Mokhov, E. N.; Baranov, P. G.; Dyakonov, V. & Astakhov, G. V.
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Highly Efficient Optical Pumping of Spin Defects in Silicon Carbide for Stimulated Microwave Emission, Phys. Rev. Applied 9, 054006 (2018)
Fischer, M.; Sperlich, A.; Kraus, H.; Ohshima, T.; Astakhov, G. V. & Dyakonov, V.
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Spin colour centres in SiC as a material platform for sensing and information processing at ambient conditions, EPJ Web of Conferences 190, 04001 (2018)
Anisimov, Andrey; Soltamov, Victor; Baranov, Pavel; Astakhov, Georgy & Dyakonov, Vladimir
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Excitation and coherent control of spin qudit modes in silicon carbide at room temperature, Nat. Commun. 10, 1678 (2019)
Soltamov, V. A.; Kasper, C.; Poshakinskiy, A. V.; Anisimov, A. N.; Mokhov, E. N.; Sperlich, A.; Tarasenko, S. A.; Baranov, P. G.; Astakhov, G. V. & Dyakonov, V.
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Influence of Irradiation on Defect Spin Coherence in Silicon Carbide, Phys. Rev. Appl. 13, 044054 (2020)
Kasper, C.; Klenkert, D.; Shang, Z.; Simin, D.; Gottscholl, A.; Sperlich, A.; Kraus, H.; Schneider, C.; Zhou, S.; Trupke, M.; Kada, W.; Ohshima, T.; Dyakonov, V. & Astakhov, G. V.
