| Autor: |
Krumrein, Marcel, Nold, Raphael, Davidson-Marquis, Flavie, Bourama, Arthur, Niechziol, Lukas, Steidl, Timo, Peng, Ruoming, Körber, Jonathan, Stöhr, Rainer, Gross, Nils, Smet, Jurgen, Ul-Hassan, Jawad, Udvarhelyi, Péter, Gali, Adam, Kaiser, Florian, Wrachtrup, Jörg |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
ACS Photonics 2024, 11, 6, 2160 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1021/acsphotonics.4c00538 |
| Popis: |
Emitters in high refractive index materials like 4H-SiC suffer from reduced detection of photons because of losses caused by total internal reflection. Thus, integration into efficient nanophotonic structures which couple the emission of photons to a well defined waveguide mode can significantly enhance the photon detection efficiency. In addition, interfacing this waveguide to a classical fiber network is of similar importance to detect the photons and perform experiments. Here, we show a waveguide fiber interface in SiC. By careful measurements we determine efficiencies exceeding 93 % for the transfer of photons from SiC nanobeams to fibers. We use this interface to create a bright single photon source based on waveguide integrated V2 defects in 4H-SiC and achieve an overall photon count rate of 181 kilo-counts per second. We observe and quantify the strain induced shift of the ground state spin states and demonstrate coherent control of the electron spin with a coherence time of T2=42.5 $\rm\mu$s. |
| Databáze: |
arXiv |
| Externí odkaz: |
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