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Q: Fachverband Quantenoptik und Photonik
Q 6: Nano-Optics (Single Quantum Emitters) I
Q 6.5: Vortrag
Montag, 11. März 2019, 11:30–11:45, S SR 112 Maschb.
Very large and reversible Stark Shift tuning of single emitters in layered hexagonal boron nitride — •Niko Nikolay1, Noah Mendelson2, Nikola Sadzak1, Florian Böhm1, Toan Trong Tran2, Bernd Sontheimer1, Igor Aharonovich2, and Oliver Benson1 — 1AG Nanooptik & IRIS Adlershof, Humboldt Universität zu Berlin, Newtonstraße 15, D-12489 Berlin, Germany — 2The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
To exploit the functionality of an single photon emitter (SPE) - cavity system, it is essential to tune the SPEs' zero phonon line to a cavity's resonance. In this work we show very large Stark shifts of selected bright and stable SPEs embedded in a few layer hexagonal boron nitride (hBN). We applied an electrostatic field to individual SPEs by sandwiching the hBN between a conductive atomic force microscope tip and an indium tin oxide coated glass slide. Stark shifts of 5.5(3) nm at a resonance wavelength of 670 nm were induced by the application of 20 V, which is larger than the typical resonance line widths of nanodielectric and even nanoplasmonic resonators. A determination of the polarizability, the dipole moment and the dipole orientation of the SPEs completes the full characterization of the selected SPEs. Our results are important to further understand the physical origin of SPEs in hBN, as well as for practical quantum photonic applications requiring broad spectral tuning and on/off resonance switching.