High-temperature superconducting nanowires for photon detection
Journal article, 2015
The possible use of high-temperature superconductors (HTS) for realizing superconducting nanowire single-photon detectors is a challenging, but also promising, aim because of their ultrafast electron relaxation times and high operating temperatures. The state-of-the-art HTS nanowires with a 50-nm thickness and widths down to 130 nm have been fabricated and tested under a 1550-nm wavelength laser irradiation. Experimental results presenting both the amplitude and rise times of the photoresponse signals as a function of the normalized detector bias current, measured in a wide temperature range, are discussed. The presence of two distinct regimes in the photoresponse temperature dependence is clearly evidenced, indicating that there are two different response mechanisms responsible for the HTS photoresponse mechanisms.
Nanostructures and nanowires
Yttrium barium copper oxide
Optical photoresponse
High-temperature superconductivity
Pulsed-laser deposition
Superconducting single-photon detectors
Author
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
M. Ejrnaes
Superconductors, oxides and other innovative materials and devices
L. Parlato
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
F. Tafuri
Superconductors, oxides and other innovative materials and devices
University of Campania Luigi Vanvitelli
R. Cristiano
Superconductors, oxides and other innovative materials and devices
D. Golubev
Aalto University
R. Sobolewski
University of Rochester
Instytut Technologii Elektronowej (ITE)
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
G. P. Pepe
Superconductors, oxides and other innovative materials and devices
University of Naples Federico II
Physica C: Superconductivity and its Applications
0921-4534 (ISSN)
Vol. 509 16-21Subject Categories
Physical Sciences
DOI
10.1016/j.physc.2014.09.017