Approaching microwave photon sensitivity with Al Josephson junctions
Journal article, 2022
Here, we experimentally test the applicability of an aluminium Josephson junction of a few micrometers size as a single photon counter in the microwave frequency range. We have measured the switching from the superconducting to the resistive state through the absorption of 10 GHz photons. The dependence of the switching probability on the signal power suggests that the switching is initiated by the simultaneous absorption of three and more photons, with a dark count time above 0.01 s.
thermal activation
microwave photons
single photon counter
Josephson junction
Author
Andrey L. Pankratov
Russian Academy of Sciences
Nizhny Novgorod State Technical University
Lobachevsky University
Gordeeva
Nizhny Novgorod State Technical University
Russian Academy of Sciences
Leonid S. Revin
Russian Academy of Sciences
Nizhny Novgorod State Technical University
Dmitry A. Ladeynov
Lobachevsky University
Russian Academy of Sciences
Nizhny Novgorod State Technical University
Anton A. Yablokov
Nizhny Novgorod State Technical University
Russian Academy of Sciences
Leonid Kuzmin
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Beilstein Journal of Nanotechnology
21904286 (eISSN)
Vol. 13 582-589Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.3762/bjnano.13.50