The 80th JSAP Autumn Meeting 2019

Presentation information

Oral presentation

11 Superconductivity » 11.4 Analog applications and their related technologies

[19p-C207-1~17] 11.4 Analog applications and their related technologies

Thu. Sep 19, 2019 1:15 PM - 6:00 PM C207 (C207)

Sano Kyosuke(Nagoya Univ.), Hiroyuki Shibata(北見工大)

4:45 PM - 5:00 PM

[19p-C207-13] Applicability of small Josephson Junction Arrays as Radiation Detectors

Toshiki Suzuki1, Godwill Mbiti Kanyolo1, Hiroshi Nishigaki1, Yoshinao Mizugaki1, Hiroshi Shimada1 (1.UEC)

Keywords:Josephson Junction, Small Josephson Junction Array, Radiation Detector

Arrays of small Josephson junctions exhibit a unique current-voltage characteristics known as Coulomb blockade. Experiments of such arrays irradiated with microwaves have demonstrated that the Coulomb blockade voltage is linearly diminished with microwave power.
In this experiment, we fabricate in situ an array of small Aluminum Josephson junctions on a Silicon substrate adjacent to Superconducting Single Electron Transistor (SSET) acting as a source of microwaves, and observe the response (the change in the Coulomb blockade width) of the array to the radiation emitted by the SSET. Consequently, we evaluate the applicability of the array as an effective on site microwave detector.