High-speed phonon imaging using frequency-multiplexed kinetic inductance detectors

TL;DR

This paper demonstrates high-speed phonon imaging in silicon using frequency-multiplexed superconducting resonators, enabling rapid, synchronized detection crucial for advanced low-temperature physics applications.

Contribution

It introduces a novel array of frequency-multiplexed kinetic inductance detectors capable of sub-microsecond imaging, advancing phonon detection technology.

Findings

Achieved sub-$or$ s array imaging speed.

Enabled fully synchronous array sampling.

Potential applications in quantum computing and dark matter detection.

Abstract

We present a measurement of phonon propagation in a silicon wafer utilizing an array of frequency-multiplexed superconducting resonators coupled to a single transmission line. The electronic readout permits fully synchronous array sampling with a per-resonator bandwidth of 1.2 MHz, allowing sub-$\mu$s array imaging. This technological achievement is potentially vital in a variety of low-temperature applications, including single-photon counting, quantum-computing and dark-matter searches.