Presentation
5 October 2023 Superconducting single-photon detectors on lithium niobate-on-insulator
Author Affiliations +
Abstract
Superconducting nanowire single-photon detectors (SNSPDs) are a key building block in photon-based quantum computation and communication. To realize a scalable photonic device, integration of SNSPDs on waveguides is necessary. Hereby, one of the most promising waveguide materials is lithium niobate-on-insulator (LNOI). To find the ideal superconductor growth conditions, in this case NbTiN on LNOI, we created a series of superconducting films, while varying the superconductors stoichiometry. Here, the produced SNSPDs become more sensitive at a higher nitrogen content, while for lower amounts of nitrogen the recovery time is reduced, allowing for a direct correlation of sputter conditions and SNSPD performance.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian Schmid, Fabian Wietschorke, Rasmus Flaschmann, Lucio Zugliani, Stefan Strohauer, Stefanie Grotowski, Jonathan Finley, and Kai Müller "Superconducting single-photon detectors on lithium niobate-on-insulator", Proc. SPIE PC12657, Quantum Nanophotonic Materials, Devices, and Systems 2023, PC126570E (5 October 2023); https://doi.org/10.1117/12.2682733
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KEYWORDS
Superconductors

Lithium

Single photon detectors

Thin films

Waveguides

Crystals

Magnetism

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