Superconducting transition detector in power amplification mode: a tool for cryogenic multiplexing

TL;DR

This paper demonstrates that superconducting transition detectors can function as power amplifiers, achieving significant gain and enabling improved noise matching in cryogenic multiplexing systems.

Contribution

It introduces the concept of using superconducting transition detectors as power amplifiers and validates the approach with experimental results.

Findings

Power gain of 23 achieved experimentally.

Good agreement between theory and experiment.

Enhanced noise matching for cryogenic multiplexing.

Abstract

We demonstrate that substantial power gain can be obtained with superconducting transition detectors. We describe the properties of the detector as a power amplifier theoretically. In our first experiments power gain of 23 was reached in a good agreement with the theory. The gain facilitates noise matching of the readout circuit to the detectors in the case of time division multiplexing.