SAMOP 2023 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 33: Quantum Networks II (joint session QI/Q)
QI 33.6: Vortrag
Donnerstag, 9. März 2023, 15:45–16:00, F428
Single erbium dopants in nanophotonic resonators — •Jakob Pforr1,2, Andreas Gritsch1,2, Alexander Ulanowski1,2, and Andreas Reiserer1,2 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2TU München and Munich Center for Quantum Science and Technology, 85748 Garching, Germany
Single erbium dopants in nanophotonic resonators are promising for the realization of quantum networks owing to their outstanding optical and spin coherence properties [1] and their large spectral multiplexing potential [2]. Previous experiments used yttrium-based host crystals, in which erbium is integrated in well-defined sites. However, these crystals are not compatible with established nanofabrication techniques, which hinders scalable integration into on-chip photonic circuits. To address this challenge, we have spectroscopically studied ensembles of erbium dopants in silicon nanostructures. After optimizing the erbium implantation procedure, we have observed two well-defined lattice sites with narrow inhomogeneous broadening (< 1 GHz), narrow homogeneous linewidths (< 0.01 MHz) and optical lifetimes of 0.2 ms [3]. In one-dimensional photonic crystal resonators (Q > 104, V ∼λ3), we observe single dopants with a 60-fold Purcell-enhanced emission. We will present studies of the optical coherence, spectral diffusion, spin properties and spectral multiplexing capability of these devices.
References:
[1] Merkel et. al. 2020. PRX 10(4): 041025.
[2] Ulanowski et. al. 2021. SciAdv 8(43): eabo4538.
[3] Gritsch et. al. 2021. PRX 12(4): 041009.