Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 43: Quantum Optics and Photonics

Q 43.7: Vortrag

Donnerstag, 12. März 2020, 12:30–12:45, f342

Nanophotonic tantalum pentoxide devices for integrated quantum technology — •Martin A. Wolff1,2,3,4, Lukas Splitthoff1,2,3, Thomas Grottke1,2,3, Simon Vogel1,2,3, and Carsten Schuck1,2,31Physics Institute, University of Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2CeNTech - Center for NanoTechnology, Heisenbergstr. 11, 48149 Münster, Germany — 3SoN - Center for Soft Nanoscience, Busso-Peus-Str. 10, 48149 Münster, Germany — 4martin.wolff@wwu.de

Tantalum Pentoxide (Ta2O5) is a new dielectric material system for realizing all key functionalities required for a versatile quantum technology platform on silicon chips. Here we show active and passive photonic integrated circuit components for realizing reconfigurable nanophotonic networks from Ta2O5 thin-films on insulator. Low-loss waveguides, wide-band grating couplers, micro-ring resonators with high quality factors of 356,000 and tunable directional couplers provide crucial passive linear optic functionality. Nanoelectromechanical phase shifters further enable active functionality, thus allowing for network reconfigurability, feedback and feedforward control as desired in many quantum technology applications. Waveguide-integrated superconducting nanowire single-photon detectors with efficiencies of 86% complement the quantum photonic toolbox. Our work paves the way for realizing the full suite of photonic integrated quantum technology applications with Ta2O5 nanophotonic devices.

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