Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 12: Nano-Optics I
Q 12.2: Vortrag
Montag, 6. März 2017, 17:15–17:30, P 11
Bright multicolor single photon emitter in hexagonal boron nitride at room temperature — •Merle Braun1, Bernd Sontheimer1, Igor Aharonovich2, and Oliver Benson1 — 1Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin — 2School of Mathematical and Physical Sciences, University of Technology Sydney
Single photon emitters play an important role in a variety of quantum technologies, including quantum communications and computing. The well studied color centers in diamonds present one way to produce single photons. Another promissing solid state material are two dimensional hexagonal boron nitride flakes. Due to the wide bandgap, included point defects allow generating single photons at different wavelengths. Here we report our study of the optical properties at room temperature and further our recent successes in preparing samples of hexagonal boron nitride flakes. We detected single photon emitters across the visible and near infrared spectral range (620nm - 750nm) using non-resonant excitation and took spectra, showing the expected intensity distribution: the main emission is within the zero phonon line, indicating a very high Debye-Waller factor. Even at room temperature all these stable emitters showed narrow linewidths below 5 nm as well as very short lifetimes below 5 ns, which lead to a high brightness. This property is an important requirement for many quantum optical experiments.