IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Leading-Edge Technologies of Superconducting Measurement Systems
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
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Keywords: kinetic inductance detectors, optical coupling, superconducting detector
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2017 Volume E100.C Issue 3 Pages 298-304

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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.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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