15 May 2017 Investigation of dark counts in innovative materials for superconducting nanowire single-photon detector applications
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Abstract
The phenomenon of dark counts in nanostripes of different superconductor systems such as high-temperature superconducting YBa2Cu3O7-x and superconductor/ferromagnet hybrids consisting of either NbN/NiCu or YBa2Cu3O7- x/L0.7Sr0.3MnO3 bilayers have been investigated. For NbN/NiCu the rate of dark-count transients have been reduced with respect to pure NbN nanostripes and the events were dominated by a single vortex entry from the edge of the stripe. In the case of nanostripes based on YBa2Cu3O7-x, we have found that thermal activation of vortices was also, apparently, responsible for triggering dark-count signals.
Conference Presentation
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L. Parlato, L. Parlato, M. Ejrnaes, M. Ejrnaes, U. Nasti, U. Nasti, R. Arpaia, R. Arpaia, T. Taino, T. Taino, T. Bauch, T. Bauch, H. Myoren, H. Myoren, Roman Sobolewski, Roman Sobolewski, F. Tafuri, F. Tafuri, F. Lombardi, F. Lombardi, R. Cristiano, R. Cristiano, G. Pepe, G. Pepe, } "Investigation of dark counts in innovative materials for superconducting nanowire single-photon detector applications", Proc. SPIE 10229, Photon Counting Applications 2017, 102290I (15 May 2017); doi: 10.1117/12.2267647; https://doi.org/10.1117/12.2267647
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