MgB$_2$ Thermal Kinetic Inductance Detector

T. Jabbari; A. Hawkins; A. Wandui; C. Frez; J. Greenfield; C. Roberson; M. J. Lee; P. Mauskopf; D. Cunnane

MgB$_2$ Thermal Kinetic Inductance Detector

Applied Physics 2026-03-16 v1

Authors: T. Jabbari , A. Hawkins , A. Wandui , C. Frez , J. Greenfield , C. Roberson , M. J. Lee , P. Mauskopf , D. Cunnane

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Abstract

Thermal Kinetic Inductance Detectors (TKIDs) inherently combine the phonon-limited noise performance of traditional bolometers with the array scalability and responsivity of superconducting kinetic inductance detectors. Using a superconducting resonator as the thermally sensitive element provides high responsivity and tunable dynamic range, with phonon noise set by the cryogenic operating temperature of the free-standing membrane. In this work, MgB $_2$ -based TKIDs are demonstrated operating from below 1 K up to 20 K with characterized noise-equivalent power (NEP) using integrated on-membrane heaters. A comprehensive characterization of electrical, thermal, and noise properties is presented. Phonon noise-limited performance is demonstrated from 4 to 8 K.

Keywords

superconducting quantum interference devices cryogenics thermal properties of materials

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@article{arxiv.2603.13153,
  title  = {MgB$_2$ Thermal Kinetic Inductance Detector},
  author = {T. Jabbari and A. Hawkins and A. Wandui and C. Frez and J. Greenfield and C. Roberson and M. J. Lee and P. Mauskopf and D. Cunnane},
  journal= {arXiv preprint arXiv:2603.13153},
  year   = {2026}
}

MgB$_2$ Thermal Kinetic Inductance Detector

Abstract

Keywords

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