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Proceedings Paper

Investigation of dark counts in innovative materials for superconducting nanowire single-photon detector applications
Author(s): L. Parlato; M. Ejrnaes; U. Nasti; R. Arpaia; T. Taino; T. Bauch; H. Myoren; Roman Sobolewski; F. Tafuri; F. Lombardi; R. Cristiano; G. Pepe
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Paper 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.

Paper Details

Date Published: 15 May 2017
PDF: 6 pages
Proc. SPIE 10229, Photon Counting Applications 2017, 102290I (15 May 2017); doi: 10.1117/12.2267647
Show Author Affiliations
L. Parlato, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)
M. Ejrnaes, CNR-SPIN (Italy)
U. Nasti, Univ. of Glasgow (United Kingdom)
R. Arpaia, Chalmers Univ. of Technology (Sweden)
T. Taino, Saitama Univ. (Sweden)
T. Bauch, Chalmers Univ. of Technology (Sweden)
H. Myoren, Saitama Univ. (Japan)
Roman Sobolewski, Univ. of Rochester (United States)
F. Tafuri, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)
F. Lombardi, Chalmers Univ. of Technology (Sweden)
R. Cristiano, CNR-SPIN (Italy)
G. Pepe, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)


Published in SPIE Proceedings Vol. 10229:
Photon Counting Applications 2017
Ivan Prochazka; Roman Sobolewski; Ralph B. James, Editor(s)

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