2014/01/10 by D. J. Goldie, Goldie, D. J., S. Withington +1 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Physics of Superconductivity and Magnetism #Superconducting and THz Device Technology #Superconductivity (cond-mat.supr-con) #Thermal Radiation and Cooling Technologies #cond-mat.supr-con #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1401.2291
5 pages 4 figures. Submitted to Proc. 24TH International Symposium On Space Terahertz Technology, Groningen, 8-10 APRIL, 2013
arxiv created 2014/01/10 · openalex publication_date 2014/01/10 · arxiv updated 2014/01/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Low temperature Kinetic Inductance Detectors (KIDs) are attractive candidates for producing quantumsensitive, arrayable sensors for astrophysical and other precision measurement applications. The readout uses a low frequency probe signal with quanta of energy well-below the threshold for pair-breaking in the superconductor. We have calculated the detailed non-equilibrium quasiparticle and phonon energy spectra generated by the probe signal of the KID when operating well-below its superconducting transition temperature Tc within the framework of the coupled kinetic equations described by Chang and Scalapino.[1] At the lowest bath temperature studied Tb/Tc = 0.1 the quasiparticle distributions can be driven far from equilibrium. In addition to the low frequency probe signal we have incorporated a high frequency (~ 1 THz) source signal well-above the pair-breaking threshold of the superconductor. Calculations of source signal detection efficiency are discussed