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.
hybrid materials
superconducting photon detectors
dark counts
high-critical temperature superconductors
Single-photon detectors
Author
L. Parlato
Superconductors, oxides and other innovative materials and devices
University of Naples 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
Saitama University
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
University of Naples 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
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
Proceedings of SPIE - The International Society for Optical Engineering
0277786X (ISSN) 1996756X (eISSN)
Vol. 10229 Article no 102290I- 102290I9781510609594 (ISBN)
Subject Categories
Atom and Molecular Physics and Optics
DOI
10.1117/12.2267647
ISBN
9781510609594