Investigation of dark counts in innovative materials for superconducting nanowire single-photon detector applications
Paper in proceeding, 2017
The phenomenon of dark counts in nanostripes of different superconductor systems such as high-temperature superconducting YBa 2 Cu 3 O 7-x and superconductor/ferromagnet hybrids consisting of either NbN/NiCu or YBa 2 Cu 3 O 7-x /L 0.7 Sr 0.3 MnO 3 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 YBa 2 Cu 3 O 7-x , we have found that thermal activation of vortices was also, apparently, responsible for triggering dark-count signals.
dark counts
superconducting photon detectors
hybrid materials
Single-photon detectors
high-critical temperature superconductors
Author
L. Parlato
Superconductors, oxides and other innovative materials and devices
Universita degli Studi di Napoli Federico II
M. Ejrnaes
Superconductors, oxides and other innovative materials and devices
U. Nasti
University of Glasgow
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
T. Taino
Chalmers University of Technology
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
H. Myoren
Saitama University
R. Sobolewski
University of Rochester
F. Tafuri
Superconductors, oxides and other innovative materials and devices
Universita degli Studi di Napoli Federico II
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
R. Cristiano
Superconductors, oxides and other innovative materials and devices
G. P. Pepe
Superconductors, oxides and other innovative materials and devices
Universita degli Studi di Napoli Federico II
Proceedings of SPIE - The International Society for Optical Engineering
0277786X (ISSN) 1996756X (eISSN)
Vol. 10229 Article no 102290I- 102290I9781510609594 (ISBN)
Subject Categories (SSIF 2011)
Atom and Molecular Physics and Optics
DOI
10.1117/12.2267647
ISBN
9781510609594