Underdamped Josephson junction as a switching current detector
Artikel i vetenskaplig tidskrift, 2013

We demonstrate the narrow switching distribution of an underdamped Josephson junction from the zero to the finite voltage state at millikelvin temperatures. We argue that such junctions can be used as ultrasensitive detectors of the single photons in the GHz range, operating close to the quantum limit: a given initial (zero voltage) state can be driven by an incoming signal to the finite voltage state. The width of the switching distribution at a nominal temperature of about T = 10 mK was 4.5 nA, which corresponds to an effective noise temperature of the device below 60 mK. (C) 2013 AIP Publishing LLC.

Författare

G. Oelsner

Institut fur Photonische Technologien

L. S. Revin

Russian Academy of Sciences

Nizhny Novgorod State Technical University

E. Il'Ichev

Novosibirsk State Technical University

Institut fur Photonische Technologien

A. L. Pankratov

Nizhny Novgorod State Technical University

Russian Academy of Sciences

H. G. Meyer

Institut fur Photonische Technologien

L. Gronberg

Teknologian Tutkimuskeskus (VTT)

J. Hassel

Teknologian Tutkimuskeskus (VTT)

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 103 14 142605

Ämneskategorier

Annan teknik

DOI

10.1063/1.4824308