NbN-Based Microwave Kinetic Inductance Detector with a Rewound Spiral Resonator for Broadband Terahertz Detection

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概要

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• We propose a microwave kinetic inductance detector consisting of an NbN rewound spiral resonator (spiral-MKID) as a possible broadband terahertz detector operating with a conventional cryogen-free ⁴He refrigerator. The spiral-MKIDs fabricated with NbN films reveal high-Q microwave resonation with loaded Q factors on the order of 10^{4} at 3 K, and the temperature dependence of the microwave resonance frequency is well fitted by the Mattis--Bardeen theory. The optical response was confirmed in the terahertz range below 2.4 THz. We also discuss the expected noise equivalent power of the NbN-based MKIDs.

• 2013-06-25

著者

• TAINO Tohru

  Saitama University

• OTANI Chiko

  RIKEN

• SAITO Atsushi

  Yamagata University

• OHSHIMA Shigetoshi

  Yamagata University

• Yamada Hironobu

  Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Ariyoshi Seiichiro

  Nagoya Institute of Technology, Nagoya 466-8555, Japan

• Nakajima Kensuke

  Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Tanoue Hiroyuki

  Saitama University, Saitama 338-8570, Japan

• Koga Kensuke

  RIKEN, Wako, Saitama 351-0198, Japan

• Furukawa Noboru

  RIKEN, Wako, Saitama 351-0198, Japan

• Bae Jongsuck

  Nagoya Institute of Technology, Nagoya 466-8555, Japan

• Otani Chiko

  RIKEN, Wako, Saitama 351-0198, Japan

• Saito Atsushi

  Yamagata University, Yonezawa, Yamagata 992-8510, Japan

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• NbN-Based Microwave Kinetic Inductance Detector with a Rewound Spiral Resonator for Broadband Terahertz Detection

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