pith. sign in

arxiv: 1409.8160 · v3 · pith:QJDE53XHnew · submitted 2014-09-29 · ❄️ cond-mat.mes-hall

Characterization of a multimode coplanar waveguide parametric amplifier

classification ❄️ cond-mat.mes-hall
keywords parametricamplifieraddedamplificationmodesnoiseresonatorallows
0
0 comments X
read the original abstract

We characterize a novel Josephson parametric amplifier based on a flux-tunable quarter-wavelength resonator. The fundamental resonance frequency is ~1GHz, but we use higher modes of the resonator for our measurements. An on-chip tuning line allows for magnetic flux pumping of the amplifier. We investigate and compare degenerate parametric amplification, involving a single mode, and nondegenerate parametric amplification, using a pair of modes. We show that we reach quantum-limited noise performance in both cases, and we show that the added noise can be less than 0.5 added photons in the case of low gain.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.