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Q: Fachverband Quantenoptik und Photonik
Q 46: Nano-Optics (Single Quantum Emitters) II
Q 46.7: Vortrag
Donnerstag, 12. März 2020, 15:30–15:45, a310
Nitrogen Vacancy Center Coupled to a Hybrid Bullseye Grating, a Highly Directional Single Photon Source — •Niko Nikolay1, Boaz Lubotzky2, Hamza Abudayyeh2, Florian Böhm1, Ronen Rapaport2, and Oliver Benson1 — 1AG Nanooptik & IRIS Adlershof, Humboldt-Universität zu Berlin, Germany — 2The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
In recent years the Nitrogen Vacancy center (NV) in diamond has proven to be a particularly effective tool to sense magnetic fields [1]. In laboratory environments, e.g. solid immersion lenses or high NA oil immersion lenses are often used to capture as many photons as possible because the sensing sensitivity scales with the count rate. However, these collection techniques are not always optimal as they usually require to excite and detect through the substrate. We discuss a single photon source prototype giving high collection efficiencies and potentially high fiber coupling efficiencies using air objective lenses. This source consists of a NV coupled to a slab waveguide which is supported by a bullseye grating. In addition to the working principle of the antenna [2], we discuss the NV positioning technique [3] and show an experimental characterization of single photon source.
[1] Pham, Linh My, et al., NJP 13.4 (2011): 045021.
[2] Abudayyeh, et al., QST 2.3 (2017): 034004.
[3] Nikolay, Niko, et al., APL 113.11 (2018): 113107.