Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-02-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 pages, 11 figures. Corrected expression for Fano noise NEP, improved Fig. 9, removed section on energy resolution
Scientific paper
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.
Bradford Charles Mathias
Bueno J.
Day Peter
Echternach Pierre M.
Shaw Matthew D.
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