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Superconducting nanowire single photon detectors based on NbRe nitride ultrathin films

Journal Article (2025)
Author(s)

F. Avitabile (University of Salerno)

F.C. Colangelo (TU Delft - ImPhys/Esmaeil Zadeh group, University of Salerno)

M. Yu Mikhailov (Student TU Delft)

Z. Makhdoumi Kakhaki (University of Salerno)

A Kumar (University of Salerno)

I.Z. Esmaeil Zadeh (TU Delft - ImPhys/Esmaeil Zadeh group)

C. Attanasio (University of Salerno)

C. Cirillo (University of Salerno)

Research Group
ImPhys/Esmaeil Zadeh group
DOI related publication
https://doi.org/10.1063/5.0282478
More Info
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Publication Year
2025
Language
English
Research Group
ImPhys/Esmaeil Zadeh group
Issue number
17
Volume number
127
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Abstract

The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current-voltage characteristics of the plasma was performed to optimize the superconducting critical temperature, Tc. The thickness dependence of T c for the films deposited under different conditions was analyzed down to the ultrathin limit. Optimized films were used to fabricate superconducting nanowire single photon detectors which, at T = 3.5 K, show saturated internal detection efficiency (IDE) up to a wavelength of 1301 nm and 95% IDE at 1548 nm with recovery times and timing jitter of about 8 ns and 28 ps, respectively.