Physics – Condensed Matter – Superconductivity
Scientific paper
2008-08-10
APL 93, 042510 (2008)
Physics
Condensed Matter
Superconductivity
4 pages, 4 figures
Scientific paper
We have developed a Josephson parametric amplifier, comprising a superconducting coplanar waveguide resonator terminated by a dc SQUID (superconducting quantum interference device). An external field (the pump, $\sim 20$ GHz) modulates the flux threading the dc SQUID, and, thereby, the resonant frequency of the cavity field (the signal, $\sim 10$ GHz), which leads to parametric signal amplification. We operated the amplifier at different band centers, and observed amplification (17 dB at maximum) and deamplification depending on the relative phase between the pump and the signal. The noise temperature is estimated to be less than 0.87 K.
Inomata Kunihiro
Matsuba Kazuaki
Miyazaki Toshiyuki
Nakamura Yoshifumi
Oliver William D.
No associations
LandOfFree
Flux-driven Josephson parametric amplifier does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Flux-driven Josephson parametric amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flux-driven Josephson parametric amplifier will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-370391