Research on highly sensitive terahertz detector aiming at quantum noise limit
Project/Area Number |
26420330
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Electron device/Electronic equipment
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Research Institution | National Institute of Information and Communications Technology |
Principal Investigator |
Uzawa Yoshinori 国立研究開発法人情報通信研究機構, ソーシャルイノベーションユニットテラヘルツ研究センターテラヘルツ連携研究室, 室長 (00359093)
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Co-Investigator(Kenkyū-buntansha) |
小嶋 崇文 国立天文台, 先端技術センター, 助教 (00617417)
牧瀬 圭正 国立研究開発法人情報通信研究機構, 未来ICT研究所フロンティア創造総合研究室, 主任研究技術員 (60363321)
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Co-Investigator(Renkei-kenkyūsha) |
MAKISE Kazumasa 国立研究開発法人情報通信研究機構, 未来ICT研究所フロンティア創造総合研究室, 主任研究技術員 (60363321)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | テラヘルツ / 超伝導 / 窒化ニオブチタン |
Outline of Final Research Achievements |
In this study, a terahertz SIS mixer have been developed aiming at further improvement of the sensitivity by improving the current SIS mixer with the best performance in the world so far. It was experimentally revealed that our NbTiN films for replacing Al with RF loss used in the tuning circuit has low loss in the terahertz band. We succeeded in reducing the degradation of the current-voltage characteristics of Nb tunnel junctions, caused by connecting NbTiN wirings due to the superconducting energy gap difference between Nb and NbTiN, by increasing the thickness of the Nb electrodes. Although our newly-designed prototype SIS mixers still showed slight reduction of the gap voltage in the current-voltage characteristics due to the fact that the upper and lower Nb electrodes were not able to be made thick enough due to the restriction of the fabrication process at the present time, this result suggests a useful guideline for the future development.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Tuning circuit material for mass-produced Terahertz SIS receivers2015
Author(s)
Y. Uzawa, Y. Fujii, A. Gonzalez, K. Kaneko, M. Kroug, T. Kojima, A. Miyachi, K. Makise, S. Saito, H. Terai, and Z. Wang
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Journal Title
IEEE Trans. Appl. Supercond.
Volume: 25
Issue: 3
Pages: 2401005-2401005
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Development of Superconducting THzReceivers for Radio Astronomy2016
Author(s)
Y. Uzawa, Y. Fujii, M. Kroug, K. Makise, A. Gonzalez, K. Kaneko, T. Kojima, A. Miyachi, S. Saito, H. Terai, and Z. Wang
Organizer
41st International Conference on Infrared, Millimeter and Terahertz Waves
Place of Presentation
Bella center, Copenhagen, Denmark
Year and Date
2016-09-25
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of Superconducting THz Receivers for Radio Astronomy2016
Author(s)
Y. Uzawa, Y. Fujii, M. Kroug, K. Makise, A. Gonzalez, K. Kaneko, T. Kojima, A. Miyachi, S. Saito, H. Terai, and Z. Wang
Organizer
41st International Conference on Infrared, Millimeter and Terahertz Waves
Place of Presentation
Bella center, Copenhagen, Denmark
Year and Date
2016-09-25
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of Terahertz SIS Mixers Using Nb/AlN/Nb Tunnel Junctions Integrated with All NbTiN Tuning Circuits2016
Author(s)
Y. Uzawa, M. Kroug, T. Kojima, K. Makise, A. Gonzalez, S. Saito, Y. Fujii, K. Kaneko, H. Terai, and Z. Wang
Organizer
Applied Superconductivity Conference 2016
Place of Presentation
Colorado Convention Center, Denver, USA
Year and Date
2016-09-04
Related Report
Int'l Joint Research
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[Presentation] Development of Terahertz SIS Mixer Using Nb/AlN/Nb Tunnel Junctions Integrated with All NbTiN Tuning Circuits2016
Author(s)
Y. Uzawa, M. Kroug, T. Kojima, K. Makise, A. Gonzalez, S. Saito, Y. Fujii, K. Kaneko, H. Terai, and Z. Wan
Organizer
Applied Superconductivity Conference 2016
Place of Presentation
Colorado Convention Center, Denver, Colorado, USA
Year and Date
2016-09-04
Related Report
Int'l Joint Research
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[Presentation] Development of Highly Sensitive Superconducting Receivers for ALMA Band 10 and Future Prospects2016
Author(s)
Y. Uzawa, K. Makise, S. Saito, H. Terai, Z. Wang, T. Kojima, M. Kroug, Y. Fujii, A. Gonzalez, and K. Kaneko
Organizer
2016 URSI Asia-Pacific Radio Science Conference
Place of Presentation
Grand Hilton Seoul Hotel, Seoul, Korea
Year and Date
2016-08-21
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of highly sensitive superconducting receivers for ALMA band 10 and future prospects2016
Author(s)
Y. Uzawa, T. Kojima, M. Kroug, Y. Fujii, A. Gonzalez, K. Kaneko, K. Makise, S. Saito, H. Terai, and Z. Wang
Organizer
2016 URSI Asia-Pacific Radio Science Conference
Place of Presentation
Grand Hilton Seoul Hotel, Seoul, Korea
Year and Date
2016-08-21
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of Terahertz SIS Mixers Using Nb/AlN/Nb Tunnel Junctions Integrated with All NbTiN Tuning Circuits2016
Author(s)
Y. Uzawa, M. Kroug, T. Kojima, K. Makise, A. Gonzalez, S. Saito, Y. Fujii, K. Kaneko, H. Terai, and Z. Wang
Organizer
27th International Symposium on Space Terahertz Technology
Place of Presentation
Jinling Hotel, Nanjing, China
Year and Date
2016-04-12
Related Report
Int'l Joint Research
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[Presentation] Characterization of NbTiN Films for Superconducting Terahertz Circuitry2015
Author(s)
Y. Uzawa, K. Makise, T. Kojima, S. Saito, M. Kroug, Y. Fujii, A. Gonzalez, K. Kaneko, H. Terai, and Z. Wang
Organizer
The 15th International Superconductive Electronics Conference
Place of Presentation
Nagoya University and Nogakudo, Nagoya, Japan
Year and Date
2015-07-06 – 2015-07-09
Related Report
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[Presentation] Characterization of NbTiN films for superconducting terahertz circuitry2014
Author(s)
Y. Uzawa, K. Makise, T. Kojima, M. Kroug, S. Saito, Y. Fujii, A. Gonzalez, K. Kaneko, H. Terai, and Z. Wang
Organizer
15th Workshop on Submillimeter-Wave Receiver Technologies in Eastern Asia
Place of Presentation
Hotel Kintetsu Aquavilla Ise-Shima, Mie, Japan
Year and Date
2014-12-15 – 2014-12-17
Related Report
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[Presentation] Performance of Terahertz Superconducting Receivers for the ALMA Telescope2014
Author(s)
Y. Uzawa, Y. Fujii, M. Kroug, K. Makise, T. Kojima, A. Miyachi, A. Gonzalez, K. Kaneko, S. Saito, H. Terai, Z. Wang, and S. Asayama
Organizer
The 9th International Symposium on Intrinsic Josephson Effect and THz Plasma Oscillations in High-Tc Superconductors
Place of Presentation
Kyoto Univ., Kyoto, Japan
Year and Date
2014-11-30 – 2014-12-03
Related Report
Invited
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[Presentation] Performance of mass-produced terahertz SIS receivers for the ALMA telescope2014
Author(s)
Y. Uzawa, Y. Fujii, A. Gonzalez, K. Kaneko, M. Kroug, T. Kojima, A. Miyachi, K. Makise, H. Terai, Z. Wang, and S. Asayama
Organizer
Applied Superconductivity Conference 2014
Place of Presentation
Charlotte Convention Center, Charlotte, USA
Year and Date
2014-08-10 – 2014-08-15
Related Report
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