The Quantum Capacitance Detector: A concept for a pair-breaking radiation detector based on the single Cooper-pair box
Abstract
We present a proposed design for a pair-breaking photodetector for far-infrared and sub-millimeter radiation. Antenna-coupled radiation generates quasiparticles in a superconducting absorber, the density of which are measured using a single Cooper-pair box. Readout is performed using an electromagnetic oscillator or a microwave resonator, which is well suited for frequency multiplexing in large arrays. Theoretical limits to detector sensitivity are discussed and modeled, with predicted sensitivities rivaling transition-edge sensors and microwave kinetic inductance detectors. We anticipate that this detector can be used to address key scientific goals in far-infrared and sub-millimeter astronomy.
Keywords
Cite
@article{arxiv.0902.4194,
title = {The Quantum Capacitance Detector: A concept for a pair-breaking radiation detector based on the single Cooper-pair box},
author = {M. D. Shaw and J. Bueno and P. Day and C. M. Bradford and P. M. Echternach},
journal= {arXiv preprint arXiv:0902.4194},
year = {2015}
}
Comments
11 pages, 11 figures. Corrected expression for Fano noise NEP, improved Fig. 9, removed section on energy resolution