Development of an optical coupling with ground-side absorption for antenna-coupled kinetic inductance detectors

Hiroki Watanabe, Satoru Mima, Shugo Oguri, Mitsuhiro Yoshida, Masashi Hazumi, Hirokazu Ishino, Hikaru Ishitsuka, Atsuko Kibayashi, Chiko Otani, Nobuaki Sato, Osamu Tajima, Nozomu Tomita

Research output: Contribution to journalArticlepeer-review

Abstract

Antenna-coupled kinetic inductance detectors (KIDs) have recently shown great promise as microwave detection systems with a large number of channels. However, this technique, still has difficulties in eliminating the radiation loss of the resonator signals. To solve this problem, we propose a design in which the absorption area connected to an antenna is located on the ground-side of a coplanar waveguide. Thereby, radiation loss due to leakage from the resonator to the antenna can be considerably reduced. This simple design also enables the use of a contact aligner for fabrication. We have developed KIDs with this design, named as the ground-side absorption (GSA)-KIDs and demonstrated that they have higher quality factors than those of the existing KIDs, while maintaining a good total sensitivity.

Original languageEnglish
Pages (from-to)298-304
Number of pages7
JournalIEICE Transactions on Electronics
VolumeE100C
Issue number3
DOIs
Publication statusPublished - Mar 2017

Keywords

  • Kinetic inductance detectors
  • Optical coupling
  • Superconducting detector

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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