日本語
The University of Electro-Communications 
Graduate School of Informatics and Engineering, School of Informatics and Engineering 
"Department of Computer and Network Engineering, Cluster II (Emerging Multi-interdisciplinary Engineering)" 

Assistant Professor 
TAKEYOSHI TAJIRI 

Personal website  

Career
University of Twente  Faculty of Science and Technology  Visiting student  2016/01-2016/03 
the University of Tokyo  Graduate School of Engineering  Japan Society for the Promotion of Science (JSPS), researcher (DC2)  2016/04-2017/03 
the University of Tokyo  Institute of Industrial Science (IIS)  Japan Society for the Promotion of Science(JSPS), researcher (PD)  2017/04-2018/03 
University of New South Wales (UNSW) Canberra  School of Engineering and Information Technology  Visiting research fellow  2017/10-2018/03 
the University of Tokyo  Institute of Industrial Science (IIS)  Researcher  2018/04-2019/02 
University of Electro-communications  Department of Computer and Network Engineering  Research associate  2019/03-Present 

Academic background
奈良工業高等専門学校  電気工学科  2010/03/31  Graduated 
奈良工業高等専門学校  専攻科  電子情報工学専攻  2012/03/31  Graduated 
東京大学大学院  工学系研究科  電気系工学専攻  Master's program  2014/03/31  Completed 
東京大学大学院  工学系研究科  電気系工学専攻  Doctoral program  2017/03/31  Completed 

Academic degrees
学士(工学)  学位授与機構  2012/03 
修士(工学)  東京大学  2014/03 
博士(工学)  東京大学  2017/03 

Classes responsible within the university
2021  基礎科学実験A  Spring semester  Undergraduate, daytime 
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Research keywords
Photonic crystal 
Nanophotonics 
Nano-optoelectronics 

Published papers
Paper  Yes  Design of a Bull’s-eye optical cavity toward efficient quantum media conversion using a gate-defined quantum dot  Joint  S. Ji, T. Tajiri, H. Kiyama, A. Oiwa and S. Iwamoto  Japanese Journal of Applied Physics  60/ 10, 102003-1-102003-7  2021/09/24 
Paper  Yes  Reflectivity of three-dimensional GaAs photonic band-gap crystals of finite thickness  Joint  T. Tajiri, S. Takahashi, C. A. M. Harteveld, Y. Arakawa, S. Iwamoto, W. L. Vos  Physical Review B  101/ 235303, 1-9  2020/06/01  10.1103/PhysRevB.101.235303 
Paper  Yes  Feasibility study of a coherent feedback squeezer  Shota Yokoyama, Daniel Peace, Warit Asavanant, Takeyoshi Tajiri, Ben Haylock, Moji Ghadimi, Mirko Lobino, Elanor H Huntington, Hidehiro Yonezawa  Physical Review A  101/ 033802, 1-16  2020/02  10.1103/PhysRevA.101.033802  URL 
Paper  Yes  Fabrication and optical characterization of photonic crystal nanocavities with electrodes for gate-defined quantum dots  Takeyoshi Tajiri, Yuji Sakai, Kazuhiro Kuruma, Ji M Sangmin, Haruki Kiyama, Akira Oiwa, Julian Ritzmann, Arne Ludwig, Andreas D. Wieck, Ota Yasutomo, Yasuhiko Arakawa, Satoshi Iwamoto  Japanese Journal of Applied Physics  59/ SGGI05, 1-6  2020/02/20  10.7567/1347-4065/ab5b62 
Paper  Yes  In situ wavelength tuning of quantum-dot single-photon sources integrated on a CMOS-processed silicon waveguide  Ryota Katsumi, Yasutomo Ota, Alto Osada, Takeyoshi Tajiri, Takuto Yamaguchi, Masahiro Kakuda,Satoshi Iwamoto, Hidefumi Akiyama, Yasuhiko Arakawa  Applied Physics Letters  116/ 041103, 1-5  2020/01  /10.1063/1.5129325 
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Research presentations
Oral presentation for an academic conference  レーザアシスト光電気化学エッチングによる GaNマイクロディスク共振器の作製と光学評価  第82回 応用物理学会 秋季学術講演会  13/ N321  No  下吉 賢信, 浮田 駿, 内田 和男, 田尻 武義  2021/09/13 
Oral presentation for an academic conference  Fabrication and characterization of AlGaN p-n diode with n-ZnO as a tunnel junction layer  2021 International Conference on solid-state devices and materials (SSDM)  E/ 5  Yes  S.Ukita, J. Morimoto, M. Daikoku, S. Zheng, T. Tajiri, and K. Uchida  2021/09/08 
Oral presentation for an academic conference  Fabrication of deeply undercut GaN micro-disks by selective photo-electrochemical etching of thick InGaN/GaN superlattice  2021 International Conference on solid-state devices and materials (SSDM)  K/ 5  Yes  K. Shimoyoshi, S.Ukita, K. Uchida, and T. Tajiri  2021/09/08 
Oral presentation for an academic conference  ファイバーピグテール付きSi 導波路上への 量子ドット-ナノ共振器結合系の転写プリント集積  第68回応用物理学会春季学術講演会  No  勝見 亮太, 太田泰友, 田尻武義, 岩本敏, 秋山英文, J. P. Reithmaier, M. Benyoucef, 荒川泰彦  2021/03/19 
Oral presentation for an academic conference  厚膜InGaN系犠牲層の光電気化学エッチングによる中空GaNマイクロディスク構造の作製  第68回応用物理学会春季学術講演会  No  下吉 賢信、浮田 駿、内田 和男、田尻 武義  2021/03/17 
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Awards
第62回応用物理学会春季学術講演会 応用物理学会講演奨励賞  プレート差込型積層方式を用いた三次元フォトニック結晶 〜提案と作製〜  2015/03 
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Grants-in-aid for scientific research
窒化物半導体スラブ型フォトニック結晶の品質改善と光集積回路への応用  Other  2020/04/01-2024/03/31 
能動素子と受動素子を同時集積した窒化物半導体フォトニック結晶  Research activity start-up  2019/04-2021/03 
三次元フォトニック結晶を用いた円偏光制御の実現と三次元光量子回路への応用  Other  2016/04/01-2018/03/31 
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External fund
埋め込み再成長法を用いた窒化物半導体三次元フォトニック結晶の作製と応用に関する研究  Donations for research  稲盛財団  2020/04-2022/03 
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Memberships of academic societies
応用物理学会  2012-Present 
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Committee or council involvement
日本光学会光科学及び光技術調査委員会委員会  2021/04/01-Present 
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Media coverage
Other  OPTRONICS 通巻464号  薄いフォトニック結晶が光を強力に制御-緻密な構造制御が示す新たな光学材料の可能性  2020/08/10 
Other  optics.org  Rethinking photonic crystals: ‘even thin is functional’  2020/06/04 
Other  engineersonline.nl  Fotonische kristallen: "Zelfs dun functioneel"  2020/06/03 
Other  Nanowerk  Photonic crystals: 'even thin is functional'  2020/05/28 
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Committee activity in the University
学生支援担任(1年生)  2021/04-Present 
卒研配属WG  2020/04-2021/03 
卒研配属委員会  2020/04-2021/03 
研究設備センター 先端研究設備部門 CVD・ガス関係補佐  2019/04-Present 
大学入試問題作成委員会  2019/04-2020/03 
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