SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 39: Quantum Optics & Nano-Optics
Q 39.1: Vortrag
Mittwoch, 8. März 2023, 14:30–14:45, F342
Ultra-small superconducting Nb-based plasmonic perfect absorbers single mode fiber coupled photodetectors — •Philipp Karl1, Sandra Mennle1, Monika Ubl1, Ksenia Weber1, Pavel Ruchka1, Mario Hentschel1, Philipp Flad1, Jing-Wei Yang2,3, Tzu-Yu Peng2,3, Yu-Jung Lu2,3, and Harald Giessen1 — 14th Physics Institute, Research Center SCoPE, and IQST, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany — 2Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan — 3Department of Physics, National Taiwan University, Taipei 10617, Taiwan
Quantum technologies require high-quality and efficient photodetectors and the ability to detect single photons, which can be provided by superconducting nanowire single photon detectors.
In this work, we present a superconducting niobium-based plasmonic perfect absorber detector and utilize the tunable plasmonic resonance to create a photodetector with near-100% absorption efficiency in the near-infrared spectral range. To reach the near-100% absorption, we take advantage of resonant plasmonic perfect absorber effects. This leads to an angle insensitivity and a high resonant absorption cross-section, which enable ultra-small active areas and short recovery times.
The ultra-small active areas are aided by a directly coupled single mode fiber in combination with high NA micro optics, which are printed onto the fiber.