Superconducting Nanowire Single Photon Detectors (SNSPDs) based on Nb0.15Re0.85 disordered nanowires are developed. The devices have a meander structure of wires nm wide and cover a circular detection area with a diameter of about 10–16 μm. The main figures of merit of the detectors are extracted from a flood illumination process at 2.8 K, featuring a saturated internal efficiency up to 1301 nm, recovery times between about 8 and 19 ns, and a jitter of about 35 ps. These results confirm that Nb0.15Re0.85 is a promising candidate for the realization of fast SNSPDs, as recently suggested.
Superconducting nanowire single photon detectors based on disordered NbRe films
C. Cirillo, J. Chang, M. Caputo, J. W. N. Los, S. Dorenbos, I. Esmaeil Zadeh, C. Attanasio; Superconducting nanowire single photon detectors based on disordered NbRe films. Appl. Phys. Lett. 26 October 2020; 117 (17): 172602. https://doi.org/10.1063/5.0021487
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