Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster: Quantum Optics and Photonics III

Q 57.40: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik

Development of Ta2O5 based photonic circuitry as new platform for integrated optics — •Lukas J. Splitthoff1,2, Martin A. Wolff1,2, and Carsten Schuck1,21University of Münster, Physics Institute, Wilhelm-Klemm Str. 10, 48149 Münster, Germany — 2CeNTech, Center for NanoTechnology, Heisenbergstr. 11, 48149 Münster, Germany

Integrated optical quantum information systems that work in the single-photon regime rely on low-loss and CMOS-compatible nano-photonic platforms, which enable the on-chip integration of quantum emitters and single-photon detectors. The high refractive index contrast between Ta2O5 and SiO2 as well as the low self-fluorescence of Ta2O5 enable on-chip quantum experiments in the visible wavelength range [1] as well as the telecommunications C-band [2] with high-quality devices and small footprint. Therefore, Ta2O5 serves as a promising candidate for outperforming existing photonic platforms such as Si3N4.

Here we report on the development of nano-photonic components on the Ta2O5 on insulator platform. We fabricate single-mode waveguides, grating couplers, resonators, and power splitters and characterize their performance for applications in integrated quantum photonics. We further assess the implementation of superconducting nanowire single-photon detectors (SNSPDs) and single-photon sources like nitrogen-vacancy (NV) centers.

[1]Liebermeister et al., arXiv:1710.03095 [quant-ph] (2017) [2]Belt et al., Optica 4, 10.1364/OPTICA.4.000532 (2017)

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