長野 晃士 (NAGANO Koji)

Profile

Thesis

• 修士論文「重力波検出器KAGRAのための量子雑音低減法の開発 (A study on the reduction of quantum noise for the gravitational wave detector KAGRA)」(PDF、2017年1月31日提出版)
  • 審査会発表資料
• 博士論文 "Control scheme for a Fabry–Pérot type interferometric space gravitational wave antenna" (「Fabry–Pérot型宇宙重力波望遠鏡の制御手法に関する研究」) (PDF、2020年2月28日提出版)
  • 審査会発表資料

Papers

1. Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, and Seiji Kawamura, "New method to measure the angular antispring effect in a Fabry-Perot cavity with remote excitation using radiation pressure", Phys. Lett. A 380 (2016) 983-988 http://www.sciencedirect.com/science/article/pii/S0375960116000098
2. Yutaro Enomoto, Koji Nagano, Masayuki Nakano, Akira Furusawa, and Seiji Kawamura, "Observation of reduction of radiation-pressure-induced rotational anti-spring effect on a 23 mg mirror in a Fabry-Perot cavity", Class. Quantum Grav. 33 (2016) 145002 http://iopscience.iop.org/article/10.1088/0264-9381/33/14/145002
3. Yutaro Enomoto, Koji Nagano, and Seiji Kawamura, "Standard quantum limit of angular motion of a suspended mirror and homodyne detection of ponderomotively squeezed vacuum field", Phys. Rev. A 94 (2016) 012115 https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.012115 (arXiv:1602.05344)
4. Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, and Seiji Kawamura, "Mitigation of radiation-pressure-induced angular instability of a Fabry-Perot cavity consisting of suspended mirrors", Phys. Lett. A 380 (2016) 3871-3875 https://www.sciencedirect.com/science/article/pii/S0375960116311343
5. Yuta Michimura, Tomofumi Shimoda, Takahiro Miyamoto, Ayaka Shoda, Koki Okutomi, Yoshinori Fujii, Hiroki Tanaka, Mark A. Barton, Ryutaro Takahashi, Yoichi Aso, Tomotada Akutsu, Masaki Ando, Yutaro Enomoto, Raffaele Flaminio, Kazuhiro Hayama, Eiichi Hirose, Yuki Inoue, Takaaki Kajita, Masahiro Kamiizumi, Seiji Kawamura, Keiko Kokeyama, Kentaro Komori, Rahul Kumar, Osamu Miyakawa, Koji Nagano, Masayuki Nakano, Naoko Ohishi, Ching Pin Ooi, Fabián Erasmo Peña Arellano, Yoshio Saito, Katsuhiko Shimode, Kentaro Somiya, Hiroki Takeda, Takayuki Tomaru, Takashi Uchiyama, Takafumi Ushiba, Kazuhiro Yamamoto, Takaaki Yokozawa, and Hirotaka Yuzurihara, "Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope", Class. Quantum Grav. 34 (2017) 225001 http://iopscience.iop.org/article/10.1088/1361-6382/aa90e3 (arXiv:1709.02574)
6. KAGRA Collaboration (Tomotada Akutsu, ..., Koji Nagano, et al.), "Construction of KAGRA: an Underground Gravitational Wave Observatory", Prog. Theor. Exp. Phys. 2018 (2018) 013F01 https://academic.oup.com/ptep/article/2018/1/013F01/4817346 (arXiv:1712.00148)
7. Koji Nagano, Antonio Perreca, Koji Arai, and Rana X Adhikari, "External quantum efficiency enhancement by photon recycling with backscatter evasion", Applied Optics 57 (2018) 3372 https://www.osapublishing.org/ao/abstract.cfm?uri=ao-57-13-3372 (arXiv:1710.07399)
8. Yuta Michimura, Kentaro Komori, Atsushi Nishizawa, Hiroki Takeda, Koji Nagano, Yutaro Enomoto, Kazuhiro Hayama, Kentaro Somiya, and Masaki Ando, "Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector", Phys. Rev. D 97 (2018) 122003 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.122003 (arXiv:1804.09894)
9. Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura, Koji Nagano, Kentaro Komori, Masaki Ando, and Kazuhiro Hayama, "Polarization test of gravitational waves from compact binary coalescences", Phys. Rev. D 98 (2018) 022008 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.022008 (arXiv:1806.02182)
10. Koji Nagano, Tomohiro Fujita, Yuta Michimura, and Ippei Obata, "Axion Dark Matter Search with Interferometric Gravitational Wave Detectors", Phys. Rev. Lett. 123 (2019) 111301 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.111301 (open access) (arXiv:1903.02017)
    • Press release: University of Tokyo (Japanese), University of Tokyo (English), Kyoto University
    • News article: 財経新聞, OPTRONICS ONLINE, Optinews, 日刊工業新聞オンライン, Phys.org, nanowerk, ScienceDaily, SciTechDaily, Big Think
    • Movie: 研究紹介ビデオ(youtube)『研究室の扉「光で暗黒物質の正体に迫る」』
11. KAGRA Collaboration (Tomotada Akutsu, ..., Koji Nagano, et al.), "First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA", Class. Quantum Grav. 36 (2019) 165008 https://iopscience.iop.org/article/10.1088/1361-6382/ab28a9 (arXiv:1901.03569)
12. Hiroki Takeda, Atsushi Nishizawa, Koji Nagano, Yuta Michimura, Kentaro Komori, Masaki Ando, and Kazuhiro Hayama, "Prospects for gravitational-wave polarization test from compact binary mergers with future ground-based detectors", Phys. Rev. D 100 (2019) 042001 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.100.042001 (arXiv:1904.09989)
13. KAGRA Collaboration (Tomotada Akutsu, ..., Koji Nagano, et al.), "An arm length stabilization system for KAGRA and future gravitational-wave detectors", Class. Quantum Grav. 37 (2020) 035004 https://iopscience.iop.org/article/10.1088/1361-6382/ab5c95 (arXiv:1910.00955)
14. Yuta Michimura, Yuka Oshima, Taihei Watanabe, Takuya Kawasaki, Hiroki Takeda, Masaki Ando, Koji Nagano, Ippei Obata, and Tomohiro Fujita, "DANCE: Dark matter Axion search with riNg Cavity Experiment", Journal of Physics: Conference Series 1468 (2020) 012032 https://iopscience.iop.org/article/10.1088/1742-6596/1468/1/012032/
15. KAGRA Collaboration (Tomotada Akutsu, ..., Koji Nagano, et al.), "Application of the independent component analysis to the iKAGRA data", Progress of Theoretical and Experimental Physics 2020 (2020) 053F01 https://academic.oup.com/ptep/article/2020/5/053F01/5848174 (arXiv:1908.03013)
16. Rika Yamada, Yutaro Enomoto, Atsushi Nishizawa, Koji Nagano, Sachiko Kuroyanagi, Keiko Kokeyama, Kentaro Komori, Yuta Michimura, Takeo Naito, Izumi Watanabe, Taigen Morimoto, Masaki Ando, Akira Furusawa, and Seiji Kawamura, "Optimization of quantum noise by completing the square of multiple interferometer outputs in quantum locking for gravitational wave detectors", Physics Letters A 38 (2020) 126626 https://www.sciencedirect.com/science/article/abs/pii/S037596012030493X

Talks

International meetings

1. Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, and Seiji Kawamura, "Development of a stable high power Fabry-Perot cavity for quantum non-demolition measurement", ELiTES: 4th general meeting, Tokyo, Japan, December, 2015 (発表資料)
2. Koji Nagano on behalf of KAGRA Detchar subgroup, "Results of the PEM injection during bKAGRA phase 1", The 19th KAGRA F2F meeting, Osaka, Japan, May, 2018. (発表資料)
3. Koji Nagano on behalf of the KAGRA Collaboration, "Environmental monitors and injection test in bKAGRA phase1", The 4th KAGRA International Workshop, Seoul, Korea, June, 2018. (発表資料)
4. Koji Nagano, Tomofumi Shimoda, Yuta Michimura, and Masaki Ando, "Constructing Test Bench for Integration Tests of Components Developed for DECIGO and B-DECIGO", The 15th Marcel Grossmann Meeting, Rome, Italy, July, 2018. (発表資料)

Domestic meetings

1. 長野晃士、榎本雄太郎、古澤明、川村静児、「重力波検出器KAGRAのための量子雑音低減法の開発（１）」、日本物理学会2015年秋季大会、28aSK-1、大阪、2015年9月 (発表資料)
2. 長野晃士、榎本雄太郎、中野雅之、古澤明、川村静児、「重力波検出器KAGRAのための量子雑音低減法の開発（４）」、日本物理学会第71回年次大会、21pCE-11、宮城、2016年3月 (発表資料)
3. 長野晃士、榎本雄太郎、酒井譲、中野雅之、古澤明、川村静児、「重力波検出器KAGRAのための量子雑音低減法の開発（６）」、日本物理学会2016年秋季大会、22pSR-14、宮崎、2016年9月 (発表資料)
4. 長野晃士、「重力波検出器KAGRAのための量子雑音低減法の開発」、宇宙線研究所 修士博士発表会、千葉、2017年2月 (発表資料)
5. 長野晃士、和田祥太郎、川﨑拓也、道村唯太、牛場崇文、松本伸之、安東正樹、「光輻射圧による鏡の光学浮上技術の開発（３）」、日本物理学会2017年秋季大会、13pU34-9、栃木、2017年9月 (発表資料)
6. 長野晃士、「ナビゲータートーク：重力波 〜重力波の検出器と物理〜」、宇宙素粒子若手の会 第2回秋の研究会、千葉、2017年10月 (発表資料)
7. 長野晃士、和田祥太郎、川﨑拓也、道村唯太、牛場崇文、松本伸之、安東正樹、「光学浮上技術を用いた超精密位置測定装置の開発」、宇宙素粒子若手の会 第2回秋の研究会、千葉、2017年10月 (発表資料)
8. 長野晃士、和田祥太郎、川﨑拓也、道村唯太、牛場崇文、松本伸之、安東正樹、「光輻射圧による鏡の光学浮上技術の開発（６）」、日本物理学会第73回年次大会、25pK308-9、千葉、2018年3月 (発表資料)
9. 長野晃士、下田智文、道村唯太、安東正樹、「スペース重力波アンテナ DECIGO計画(99): 統合試験用プラットフォームの開発 」、日本物理学会2018年秋季大会、16aS35-6、長野、2018年9月 (発表資料)
10. 長野晃士、下田智文、道村唯太、安東正樹、「干渉計統合試験用プラットフォームの開発 」、第17回DECIGOワークショップ、愛知、2018年11月 (発表資料)
11. 長野晃士、下田智文、道村唯太、安東正樹、「スペース重力波アンテナ DECIGO計画(105): 干渉計統合試験用プラットフォーム 」、日本物理学会第74回年次大会、16pK106-6、福岡、2019年3月 (発表資料)
12. 長野晃士、武田紘樹、下田智文、道村唯太、安東正樹、「スペース重力波アンテナ DECIGO計画(109): 双方向Fabry-Perot干渉計の開発 」、日本物理学会2019年秋季大会、20pT11-10、山形、2019年9月 (発表資料)
13. 長野晃士、武田紘樹、下田智文、道村唯太、安東正樹、「双方向Fabry-Perot干渉計の開発 」、第18回DECIGOワークショップ、京都、2019年11月 (発表資料)

Posters

International meetings

1. Koji Nagano, Antonio Perreca, Koji Arai, and Rana X Adhikari, "Enhancing the quantum efficiency of an InGaAs photodiode by photon recycling", LSC-Virgo March 2016 Meeting, United States, March, 2016. (ポスター)
2. Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, and Seiji Kawamura, "Reduction of quantum noise for gravitational wave detector KAGRA (II)", Gravitational Wave Advanced Detector Workshop 2016, Italy, May, 2016. (ポスター)
3. Koji Nagano on behalf of KAGRA Detchar subgroup, "Environmental monitors in bKAGRA phase1", The 19th KAGRA F2F meeting, Osaka, Japan, May, 2018. (ポスター)
4. Koji Nagano, Tomohiro Fujita, Yuta Michimura, and Ippei Obata, "Axion Dark Matter Search with Interferometric Gravitational Wave Detectors", The 22nd KAGRA F2F meeting, Chiba, Japan, Apr., 2019. (ポスター)
[Most Outstanding Poster Award in the 22nd KAGRA F2F meeting]

Documents

• 川村研基礎レクチャー (2015年度)

Seminars

Links

• TAMA300回路リスト
• CLIO Technical Information

Awards

1. "Most Outstanding Poster Awards" at the 22nd KAGRA F2F meeting
• 22nd KAGRA F2F meeting
• KSC Newsletter No.5 (Related article is in page 8)