SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 21: Quantum Technologies: Color Centers II (joint session Q/QI)
Q 21.4: Vortrag
Dienstag, 7. März 2023, 11:45–12:00, F442
High-precision localization of color centers in diamond for deterministic coupling to quantum photonic nanostructures — •Maarten H. van der Hoeven1, Julian M. Bopp1, Maximilian Kähler1, Tommaso Pregnolato1,2, Marco Stucki1,2, and Tim Schröder1,2 — 1Humboldt-Universität zu Berlin, Department of Physics, Berlin, Germany — 2Ferdinand-Braun-Institut gGmbH, Leibniz-Institut für Höchstfrequenztechnik, Berlin, Germany
Quantum photonic circuits are fundamental building blocks for quantum information applications, like secure communication or quantum computing. In the past decades, it has been demonstrated that color centers in diamond have excellent properties to serve as qubits in such systems [1]. To create an efficient spin-photon interface, the color centers have to be coupled to quantum photonic nanostructures. The scalable fabrication of such devices with high yield and optimal performance requires deterministic alignment techniques [2]. This is achieved with high-precision localization of color centers in bulk diamond with uncertainties of a few tens of nanometers. Our approach is to determine the color center positions relative to alignment markers etched into the diamond’s surface and subsequently fabricate nanostructures around them [3]. This technique allows for a pre-selection of the emitters and only the ones with the most suitable properties are chosen and integrated into a photonic device.
[1] M. Ruf et al., Journal of Applied Physics 130, 070901 (2021)
[2] S. Rodt et al., J. Phys.: Condens. Matter 32, 153003 (2020)
[3] T. Pregnolato et al., APL Photon. 5, 086101 (2020)