Parametric amplification and oscillation at 36 GHz using a point-contact Josephson junction

Journal Article · Mon Feb 28 23:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323777· OSTI ID:7230586

Taur, Y; Richards, P L

We have observed doubly degenerate parametric amplification and oscillation at 36 GHz from a single point-contact Josephson junction. The experimental results agree qualitatively with theoretical calculations based on the resistively shunted junction model. The estimated noise temperature of an amplifier with 11 dB net gain is consistent with zero, but has an upper limit of 50 K. Attempts to observe parametric amplification in the singly degenerate mode with a pump frequency of 72 GHz were not successful.

• Research Organization: Department of Physics, University of California, Berkeley, California 94720
• OSTI ID: 7230586
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
CAVITY RESONATORS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ELEMENTS
FILMS
JOSEPHSON JUNCTIONS
METALS
MICROWAVE RADIATION
NIOBIUM
NOISE
OSCILLATIONS
PARAMETRIC AMPLIFIERS
RADIATIONS
REFRACTORY METALS
SUPERCONDUCTING JUNCTIONS
TEMPERATURE NOISE
TRANSITION ELEMENTS
USES