SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: QI Poster II (joint session QI/Q)
Q 43.39: Poster
Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof
Characterization of single-photon emitters in hexagonal boron nitride at room temperature — •Leonora Meier1, Pablo Tieben2, Stefan Kück1, Andreas Schell2, and Marco López1 — 1PTB, Braunschweig, Deutschland — 2Leibniz Universität, Hannover, Deutschland
In this work we present a study on point defects of hexagonal boron nitride (hBN) which exhibit high brightness and narrow band single photon properties. So far, several samples containing hBN defects with different concentrations have been fabricated and characterized. The characterization is performed in terms of their spectrum, single-photon purity (g(2)(0)) and stability.
It has been observed that different emitters with hBN defects exhibit different spectra, even though the single-photon purity of g(2)(0) is less than 0.3. The single-photon emission stability remains a challenge. Blinking and bleaching were observed even though the time period of stability differs greatly between different emitters.
To improve the stability of the single-photon emission, different annealing procedures will be applied; for example, heating the sample to 500∘C. In addition, the variation of photoluminescence as a function of an in-plane magnetic field will be studied to determine whether hBN point defects can be used as a magnetic sensor.