Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 64: Quantum Optics and Photonics IV

Q 64.8: Vortrag

Freitag, 9. März 2018, 12:15–12:30, K 0.016

Towards Integrated High-Tc Superconducting Nanowire Hot Electron Bolometers — •Martin A. Wolff1,2, Matvey Lyatti1,2, Simone Ferrari1,2, Carsten Schuck1,2, and Wolfram H. P. Pernice1,21University of Münster, Physics Institute, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2CeNTech - Center for NanoTechnology, Heisenbergstr. 11, 48149 Münster, Germany

The idea of exploiting the optical response of superconductors for nanophotonic applications such as bolometers, transition edge sensors and single-photon detectors is an active and rapidly growing field of research. Hot-electron bolometers (HEBs) feature very attractive performance such as low-noise and high-speed photon detection with applications in astronomy and quantum communication. However, cryogenic environments at temperatures below 4 K are inevitable for conventional low-temperature superconducting materials. Hence, there is an increasing interest for exploring the potential of high-Tc superconductors for this kind of application, thus significantly reducing the cryogenic requirements for operating HEBs.
Here we present the characterization of high-Tc YBa2Cu3O7−x (YBCO) nanowires on a transparent SrTiO3 (STO) substrate realized by a focused ion beam (FIB) milling technique. The fabricated nanowires are then used as bolometers to demonstrate their potential for photon detection.

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