OPTICS & PHOTONICS International Congress 2024

Presentation information

ICNN2024 » Oral Presentation

Session 2

Mon. Apr 22, 2024 3:20 PM - 4:50 PM 414+415 (Pacifico Yokohama Conference Center)

Session Chair: Jun Tatebayashi (Osaka University)

3:50 PM - 4:05 PM

[ICNN3-02] Current-crowding-free superconducting nanowire single-photon detectors enabled by local helium ion irradiation

*Stefan Strohauer1, Fabian Wietschorke2, Christian Schmid2, Stefanie Grotowski1, Lucio Zugliani2, Rasmus Flaschmann2, Björn Jonas2, Kai Mueller2, Jonathan Finley1 (1. Walter Schottky Institute and School of Natural Sciences, Technical University of Munich, Germany, 2. Walter Schottky Institute and School of Computation, Information and Technology, Technical University of Munich, Germany)

Local helium ion irradiation is utilized to enhance the sensitivity of superconducting nanowire single-photon detectors (SNSPDs) while preserving the high switching current of unirradiated SNSPDs. This enables current-crowding-free SNSPDs with unity internal quantum efficiency for 1550 nm photons.

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