Controlling the dynamic range of a Josephson parametric amplifier
C. Eichler, A. Wallraff
TL;DR
This paper explores how Josephson junction arrays can be used to control the dynamic range of parametric amplifiers, improving their performance for quantum-limited applications.
Contribution
It introduces design criteria for Josephson parametric amplifiers using junction arrays to enhance dynamic range control.
Findings
Junction arrays improve dynamic range management
Design guidelines for practical amplifiers
Analysis of gain, bandwidth, and noise properties
Abstract
One of the central challenges in the development of parametric amplifiers is the control of the dynamic range relative to its gain and bandwidth, which typically limits quantum limited amplification to signals which contain only a few photons per inverse bandwidth. Here, we discuss the control of the dynamic range of Josephson parametric amplifiers by using Josephson junction arrays. We discuss gain, bandwidth, noise, and dynamic range properties of both a transmission line and a lumped element based parametric amplifier. Based on these investigations we derive useful design criteria, which may find broad application in the development of practical parametric amplifiers.
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