Open AccessTheory for the response of a superconducting kinetic inductance detector to an electromagnetic wave packet
Author(s) -
Tomio Koyama,
Toshimasa Ishida
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1590/1/012034
Subject(s) - kinetic inductance , physics , detector , inductance , superconductivity , condensed matter physics , electromagnetic radiation , voltage , computational physics , optics , quantum mechanics
Voltage pulses generated by local heating due to the irradiation of an electromagnetic (EM) wave packet in a superconducting current-biased kinetic inductance detector are theoretically investigated on the basis of our previous theory [ J. Phys. Conf. Ser. 1293 , 012050 ]. The growth and decay of a hot spot created by an EM wave packet is described with the heat diffusion equation coupled with the time-dependent Ginzburg-Landau (TDGL) equation. Variation in the kinetic inductance of the current-biased stripline in the detector induced by a hot spot is explicitly derived. We clarify the characteristic feature in the shape of the voltage pulses.