Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Nano-Optics (Single Quantum Emitters)
Q 43.5: Vortrag
Mittwoch, 7. März 2018, 15:15–15:30, K 0.023
Fourier limited lines in hBN at cryogenic temperatures — •Andreas Dietrich1, Markus Bürk1, Elena Steiger1, Igor Aharonovich2, Fedor Jelezko1, and Alexander Kubanek1 — 1Institute for Quantum Optics, Ulm University, D-89081 Ulm, Germany — 2School of Mathematical and Physical Sciences, University of Technology Sydney,Ultimo, New South Wales 2007, Australia
Defect centers in layered hexagonal boron nitride (hBN) are among the most promising candidates as single photon sources in Quantum Optics applications [1]. Very recently resonant excitation of single defect centers in 2D-material hBN has been demonstrated [2], with linewidth ∼ 1 GHz being limited by rapid spectral diffusion. Here we present our recent results on resonant excitation on defects in hBN in absence of spectral diffusion or dephasing for as long as 30 s at cryogenic temperatures, enabling us to measure Fourier limited lines of 55 MHz ± 10 MHz. Additional we report single photon emitters in hBN over a wide optical range and investigate phonon side-band emission. Fourier limited lines in a wide optical range with potentialy long coherence times [3] make hBN a promising candidate for applications such as quantum repeaters.
[1] Tran, Toan Trong, et al. Nature nanotechnology 11.1 (2016): 37-41.
[2] Tran, Toan Trong, et al. ACS Photonics (2017).
[3] Abdi, Mehdi, et al. arXive preprint arXiv:1704.00638 (2017)