Development of microwave kinetic inductance detectors for a detection of phonons

Hirokazu Ishino, A. Kibayashi, K. Hattori, M. Hazumi, Y. Kibe, S. Mima, N. Sato, M. Yoshida, H. Watanabe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present a status of the development of microwave kinetic inductance detectors (MKIDs) for a detection of athermal phonons in a substrate. The energy deposited in the substrate is converted to athermal phonons. Athermal phonons arriving at the surface can break Cooper pairs in the MKIDs which are formed as a thin superconducting metal layer in the substrate surface. By counting the number of Cooper pairs broken and measuring the phonon arrival times, we can measure the amount of deposited energy and its position. MKIDs are suitable for the frequency-domain multiplexing readout, which enables us to readout hundreds of pixels simultaneously and, hence, to detect athermal phonons with a large detection efficiency. We fabricated MKIDs with a combination of aluminum and niobium on a silicon substrate, and then irradiated it with α particles from an 241 Am source. We detected phonons and made a rough estimation of the phonon propagation velocity of 1.1-1.3 km/s. We found that a thin insulator layer can block the phonon propagation from the substrate to the thin metal layer.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalJournal of Low Temperature Physics
Volume176
Issue number3-4
DOIs
Publication statusPublished - 2014

Fingerprint

Phonons
inductance
Inductance
phonons
Microwaves
Detectors
microwaves
Kinetics
detectors
kinetics
Substrates
readout
Metals
Niobium
propagation velocity
Silicon
Aluminum
multiplexing
Multiplexing
niobium

Keywords

  • MKIDs
  • Phonon detection
  • Phonon velocity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)

Cite this

Ishino, H., Kibayashi, A., Hattori, K., Hazumi, M., Kibe, Y., Mima, S., ... Watanabe, H. (2014). Development of microwave kinetic inductance detectors for a detection of phonons. Journal of Low Temperature Physics, 176(3-4), 161-167. https://doi.org/10.1007/s10909-013-1025-0

Development of microwave kinetic inductance detectors for a detection of phonons. / Ishino, Hirokazu; Kibayashi, A.; Hattori, K.; Hazumi, M.; Kibe, Y.; Mima, S.; Sato, N.; Yoshida, M.; Watanabe, H.

In: Journal of Low Temperature Physics, Vol. 176, No. 3-4, 2014, p. 161-167.

Research output: Contribution to journalArticle

Ishino, H, Kibayashi, A, Hattori, K, Hazumi, M, Kibe, Y, Mima, S, Sato, N, Yoshida, M & Watanabe, H 2014, 'Development of microwave kinetic inductance detectors for a detection of phonons', Journal of Low Temperature Physics, vol. 176, no. 3-4, pp. 161-167. https://doi.org/10.1007/s10909-013-1025-0
Ishino, Hirokazu ; Kibayashi, A. ; Hattori, K. ; Hazumi, M. ; Kibe, Y. ; Mima, S. ; Sato, N. ; Yoshida, M. ; Watanabe, H. / Development of microwave kinetic inductance detectors for a detection of phonons. In: Journal of Low Temperature Physics. 2014 ; Vol. 176, No. 3-4. pp. 161-167.
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