Session 2

[ICNN3-03] Enhancing detection efficiency of superconducting nanowire single-photon detectors by modifying thermal conductance via helium ion irradiation

*Fabian Wietschorke¹, Stefan Strohauer², Markus Döblinger³, Christian Schmid¹, Lucio Zugliani¹, Stefanie Grotowski², Rasmus Flaschmann¹, Björn Jonas¹, Jonathan Finley², Kai Müller¹ (1. Walter Schottky Institute and Department for Electrical and Computer Engineering, Technical University of Munich, Germany, 2. Walter Schottky Institute and Physics Department, Technical University of Munich, Germany, 3. Department of Chemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany)

We investigated the influence of Helium ion irradiation on NbTiN deposited on a Si/SiO₂ wafer in regards of electrical and thermal transport properties and found a decrease in heat conductance from superconductor to the substrate.