TOrsion-Bar Antenna: A Ground-Based Detector for Low-Frequency Gravity Gradient Measurement

• Satoru Takano,, Tomofumi Shimoda, Yuka Oshima, Ching Pin Ooi, Perry William Fox Forsyth, Mengdi Cao, Kentaro Komori, Yuta Michimura, Ryosuke Sugimoto, Nobuki Kame, Shingo Watada, Takaaki Yokozawa, Shinji Miyoki, Tatsuki Washimi, and Masaki Ando
• Galaxies 12, 78 (2024)

Comparative Study of 1D and 2D CNN Models with Attribution Analysis for Gravitational Wave Detection from Compact Binary Coalescences

• Seiya Sasaoka, Naoki Koyama, Diego Dominguez, Yusuke Sakai, Kentaro Somiya, Yuto Omae, and Hirotaka Takahashi
• arxiv:2312.04855
• Phys.Rev.D 109, 043011 (2024)

Kerr-Enhanced Optical Spring

• Sotatsu Otabe, Wataru Usukura, Kaido Suzuki, Kentaro Komori, Yuta Michimura, Ken-ichi Harada, Kentaro Somiya
• arxiv:2310.18828
• Phys.Rev.Lett. 132, 143602 (2024)

Enhancing the rationale of convolutional neural networks for glitch classification in gravitational wave detectors: a visual explanation

• Naoki Koyama, Yusuke Sakai, Seiya Sasaoka, Diego Dominguez, Kentaro Somiya, Yuto Omae, Yoshikazu Terada, Marco Meyer-Conde, and Hirotaka Takahashi
• Mach.Learn.:Sci.Technol. 5, 035028 (2024)

Parameter estimation of protoneutron stars from gravitational wave signals using the Hilbert-Huang transform

• Seiya Sasaoka, Yusuke Sakai, Diego Dominguez, Kentaro Somiya, Kazuki Sakai, Ken-ichi Oohara, Marco Meyer-Conde, and Hirotaka Takahashi
• Phys.Rev.D 110, 104020 (2024)

• Recent advances toward mesoscopic quantum optomechanics
• M. Croquette, S. Deléglise, T. Kawasaki K. Komori, M. Kuribayashi, A. Lartaux-Vollard, N. Matsumoto, Y. Michimura, M. Andia, N. Aritomi, R. Braive, T. Briant, S. Briaudeau, S. B. Cataño-Lopez, S. Chua, J. Degallaix, M. Fujimoto, K. Gerashchenko, F. Glotin, P. Gruning, K. Harada, A. Heidmann, D. Hofman, P.-E. Jacquet, T. Jacqmin, O. Kozlova, N. Leroy, V. Loriette, F. Loubar, T. Martel, R. Metzdorff, A. Mikami, L. Najera, L. Neuhaus, S. Otabe, L. Pinard, K. Suzuki, H. Takahashi, K. Takeda, Y. Tominaga, A. van de Walle, N. Yamamoto, K. Somiya, and P.-F. Cohadon
• AVS Quantum Sci. 5, 014403 (2023)
• Input optics systems of the KAGRA detector during O3GK
• KAGRA Collaboration + R. Goetz, M. Heintze, J. Liu, C. Müller, R. Savage, and D. Tanner (corresponding authors: K.Kokeyama and M.Nakano)
• arxiv:2210.05934
• Progress of Theoretical and Experimental Physics, 2, 023F01 (2023)
• Intracavity signal amplification system for next-generation gravitational-wave detectors
• K.Somiya, K.Suzuki, S.Otabe, and K.Harada
• Phys.Rev.D 107, 122005 (2023)
• Noise subtraction from KAGRA O3GK data using Independent Component Analysis
• H. Abe et al. (corresponding author: J.Kume)
• arxiv:2206.05785
• Classic. Quantum Grav., 40, 085015 (2023)
• Deep Learning for Detecting Gravitational Waves from Compact Binary Coalescences and Its Visualization by Grad-CAM
• S. Sasaoka, Y. Hou, Diego Dominguez, S Garg, N. Koyama, Y. Sakai, Y. Omae, K. Somiya, and H. Takahashi
• Prc.Sci.(ICRC2023), 1498 (2023); pre-published, non-refereed
• Deep Learning Application for Detecting Gravitational Waves from Core-Collapse Supernovae
• S. Sasaoka, Y. Hou, Diego Dominguez, S Garg, N. Koyama, Y. Sakai, Y. Omae, K. Somiya, and H. Takahashi
• Prc.Sci.(ICRC2023), 1499 (2023); pre-published, non-refereed
• Convolutional neural network for continuous gravitational waves detection
• Diego Dominguez, S. Sasaoka, S Garg, Y. Hou, N. Koyama, K. Somiya, and H. Takahashi
• Prc.Sci.(ICRC2023), 1519 (2023); pre-published, non-refereed
• Comparison of training methods for Convolutional Neural Network model for Gravitational-Wave detection from Neutron Star− Black Hole Binaries
• S Garg, S. Sasaoka, Diego Dominguez, Y. Hou, N. Koyama, K. Somiya, H. Takahashi, and M. Ohashi
• Prc.Sci.(ICRC2023), 1536 (2023); pre-published, non-refereed
• Visualizing Convolutional Neural Network for Classifying Gravitational Waves from Core-Collapse Supernovae
• Seiya Sasaoka, Naoki Koyama, Diego Dominguez, Yusuke Sakai, Kentaro Somiya, Yuto Omae, and Hirotaka Takahashi
• arxiv:2310.09551
• Phys.Rev.D 108, 123033 (2023)
• Overview of KAGRA : Data transfer and management
• T.Akutsu et al. (corresponding author: N.Kanda)
• Progress of Theoretical and Experimental Physics, 10, 10A102 (2023)

• Photothermal effect in macroscopic optomechanical systems with an intracavity nonlinear optical crystal
• S.Otabe, K.Komori, K.Harada, K.Suzuki, Y.Michimura, and K.Somiya
• Opt.Express, 30, 42579-42593 (2022)
• Prospects for improving the sensitivity of KAGRA gravitational wave detector
• Y.Michimura, M.Ando, E.Capocasa, Y.Enomoto, R.Flaminio, S.Haino, K.Hayama, E.Hirose, Y.Itoh, T.Kinugawa, K.Komori, M.Leonardi, N.Mio, K.Nagano, H.Nakano, A.Nishizawa, N.Sago, M.Shibata, H.Shinkai, K.Somiya, H.Takeda, T.Tanaka, S.Tanioka, W.Li-Wei, and K.Yamamoto
• The Fifteenth Marcel Grossmann Meeting, pp. 1599-1605 (2022)
• The Current Status and Future Prospects of KAGRA, the Large-Scale Cryogenic Gravitational Wave Telescope Built in the Kamioka Underground
• H. Abe et al. (corresponding authors: M.Nakano, T.Ushiba, and T.Washimi)
• Gallaxies, 10, 3, 63 (2022)
• Performance of the KAGRA detector during the first joint observation with GEO 600 (O3GK)
• H. Abe et al. (corresponding authors: K.Kokeyama, T.Washimi, and K.Yamamoto)
• arxiv:2203.07011
• Progress of Theoretical and Experimental Physics, 10, 10A101 (2022)
• Localization of gravitational waves using machine learning
• Seiya Sasaoka, Yilun Hou, Hirotaka Takahashi, and Kentaro Somiya
• arxiv:2202.12784
• Phys.Rev.D 105, 103030 (2022)

• Current status of space gravitational wave antenna DECIGO and B-DECIGO
• Seiji Kawamura et al.
• arxiv:2006.13545
• Progress of Theoretical and Experimental Physics, 5, 05A105 (2021)
• Cryogenic suspension design for a kilometer-scale gravitational-wave detector
• KAGRA Collaboration (corresponding author: T.Ushiba)
• arxiv:2010.01889
• Classic. Quantum Grav., 38, 085013 (2021)
• Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector
• KAGRA Collaboration (corresponding author: F.E.Pena Arellano)
• Classic. Quantum Grav., 38, 065011 (2021)
• 『量子センシングハンドブック～量子科学が切り拓く新たな領域～』
• 根来 誠 監修（4.1節「重力波検出と量子雑音」を宗宮が執筆）
• エヌ・ティー・エス ホームページ
• A back-linked Fabry–Pérot interferometer for space-borne gravitational wave observations
• Kiwamu Izumi and Masa-Katsu Fujimoto
• arxiv:2011.05483
• Progress of Theoretical and Experimental Physics, 7, 073F01 (2021)
• Overview of KAGRA : Detector design and construction history
• KAGRA Collaboration (corresponding authors: Y.Michimura, K.Somiya, and K.Yamamoto)
• arxiv:2005.05574
• Progress of Theoretical and Experimental Physics, 5, 05A101 (2021)
• Overview of KAGRA : KAGRA science
• KAGRA Collaboration (corresponding author: A.Nishizawa)
• Progress of Theoretical and Experimental Physics, 5, 05A103 (2021)
• Radiative Cooling of the Thermally Isolated System in KAGRA Gravitational Wave Telescope
• KAGRA Collaboration (corresponding author: T.Yamada)
• Journal of Physics: Conference Series, 1857, 012002 (2021)

• Quantum noise reduction techniques in KAGRA
• Kentaro Somiya
• arxiv:1909.12033 (2019)
• European Physical Journal D, 74, 10 (2020)
• Diamagnetic levitation of a milligram-scale silica using permanent magnets for the use in a macroscopic quantum measurement
• Ryosuke Nakashima
• Physics Letters A, 384, 126592 (2020)
• Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA
• Yuta Michimura, Kentaro Komori, Yutaro Enomoto, Koji Nagano, Atsushi Nishizawa, Eiichi Hirose, Matteo Leonardi, Eleonora Capocasa, Naoki Aritomi, Yuhang Zhao, Raffaele Flaminio, Takafumi Ushiba, Tomohiro Yamada, Li-Wei Wei, Hiroki Takeda, Satoshi Tanioka, Masaki Ando, Kazuhiro Yamamoto, Kazuhiro Hayama, Sadakazu Haino, and Kentaro Somiya
• Phys.Rev.D 102, 022008 (2020)
• 『相対論と宇宙の事典』
• 安東正樹 ・白水徹也 編集幹事／浅田秀樹 ・石橋明浩 ・小林努 ・真貝寿明 ・早田次郎 ・谷口敬介 編（6.7節「光の量子雑音」を宗宮が執筆）
• 朝倉書店ホームページ
• 重力波望遠鏡における量子制御
• 宗宮健太郎
• 通信ソサエティマガジン 2020秋号, 小特集『量子情報技術への期待と展望』
• Application of independent component analysis to the iKAGRA data
• KAGRA Collaboration
• Progress of Theoretical and Experimental Physics, 5, 053F01 (2020)
• An arm length stabilization system for KAGRA and future gravitational-wave detectors
• KAGRA Collaboration
• Classical and Quantum Gravity, 37, 035004 (2020)
• The status of KAGRA underground cryogenic gravitational wave telescope
• KAGRA Collaboration
• Journal of Physics: Conference Series, 1342, 012014 (2020)

• Design and experimental demonstration of a laser modulation system for future gravitational-wave detectors
• Kohei Yamamoto, Keiko Kokeyama, Yuta Michimura, Yutaro Enomoto, Masayuki Nakano, Gui-Guo Ge, Tomoyuki Uehara, Kentaro Somiya, Kiwamu Izumi, Osamu Miyakawa, Takahiro Yamamoto, Takaaki Yokozawa, Yuta Fujikawa, Nobuyuki Fujii, Takaaki Kajita
• arxiv:1908.05914 (2019)
• Classical and Quantum Gravity, 36, 205009 (2019)
• Influence of non-uniformity in sapphire substrates for a gravitational wave telescope
• Kentaro Somiya, Eiichi Hirose, Yuta Michimura
• arxiv:1907.12785 (2019)
• Phys.Rev.D 100, 082005 (2019)
• Prospects for improving the sensitivity of KAGRA gravitational wave detector
• Yuta Michimura, Masaki Ando, Eleonora Capocasa, Yutaro Enomoto, Raffaele Flaminio, Sadakazu Haino, Kazuhiro Hayama, Eiichi Hirose, Yousuke Itoh, Tomoya Kinugawa, Kentro Komori, Matteo Leonardi, Norikatsu Mio, Koji Nagano, Hiroyuki Nakano, Atsushi Nishizawa, Norichika Sago, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hiroki Takeda, Takahiro Tanaka, Satoshi Tanioka, Li-Wei Wei, Kazuhiro Yamamoto
• arxiv:1906.02866 (2019)
• Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA
• KAGRA Collaboration
• Classical and Quantum Gravity, 36, 095015 (2019)
• First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
• KAGRA Collaboration
• Classical and Quantum Gravity, 36, 165008 (2019)
• KAGRA: 2.5 generation interferometric gravitational wave detector
• KAGRA Collaboration
• Nature Astronomy 3, 35-40 (2019)

• A Direct Approach for the Fluctuation-Dissipation Theorem under Non-Equilibrium Steady-State Conditions
• Kentaro Komori, Yutaro Enomoto, Hiroki Takeda, Yuta Michimura, Kentaro Somiya, Masaki Ando, Stefan W. Ballmer
• Phys.Rev.D 97, 102001 (2018)
• Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA
• Abbott, B. P. et al. (KAGRA Collaboration, LIGO Scientific Collaboration and Virgo Collaboration)*
• Living Review and Relativity 21:3 (2018)
• Particle swarm optimization of the sensitivity of cryogenic gravitational wave detector
• Yuta Michimura, Kentaro Komori, Atsushi Nishizawa, Hiroki Takeda, Koji Nagano, Yutaro Enomoto, Kazuhiro Hayama, Kentaro Somiya, and Masaki Ando
• Phys.Rev.D 97, 122003 (2018)
• Optical design and suspension system of the KAGRA output mode-cleaner
• Junko Kasuya, John Winterflood, Ju Li, and Kentaro Somiya
• Journal of Physics Conference Series, 957, 012009
• Construction of KAGRA: an underground gravitational-wave observatory
• KAGRA Collaboration et al.
• Progress of Theoretical and Experimental Physics 2018, 013F01
• Space Gravitational Wave Antenna DECIGO and B-DECIGO
• Seiji Kawamura et al.
• J.of Mod.Phys.D, 28, 1845001
• Measurement and subtraction of Schumann resonances at 2 gravitational-wave interferometers
• M.Coughlin, A.Cirone, P.Meyers, S.Atsuta, V.Boschi, A.Chincarini, N.Christensen, R.De Rosa, A.Effler, I.Fiori, M.Golkowski, M.Guidry, J.Harms, K.Hayama, Y.Kataoka, J.Kubisz, A.Kulak, M.Laxen, J.Mlynarczyk, T.Ogawa, F.Paoletti, J.Salvador, K.Somiya, and E.Thrane
• Phys.Rev.D 97, 102007 (2018)
• Measurement of optical losses in a high-finesse 300 m filter cavity for broadband quantum noise reduction in future gravitational-wave detectors
• E.Capocasa, Y.Guo, M.Eisenmann, Y.Zhao, A.Tomura, K.Arai, Y.Aso, M.Marchio, L.Pinard, P.Prat, K.Somiya, R.Schnabel, M.Tacca, R.Takahashi, D.Tatsumi, M.Leonardi, M.Barsuglia, and R.Flaminio
• Phys.Rev.D 98, 022010 (2018)

• Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope
• Y.Michimura, T.Shimoda, T.Miyamoto, A.Shoda, K.Okutomi, Y.Fujii, H.Tanaka, M.Barton, R.Takahashi, Y.Aso, T.Akutsu, M.Ando, Y.Enomoto, R.Flaminio, K.Hayama, E.Hirose, Y.Inoue, T.Kajita, M.Kamiizumi, S.Kawamura, K.Kokeyama, K.Komori, R.Kumar, O.Miyakawa, K.Nagano, M.Nakano, N.Ohishi, C.P.Ooi, F.E.P.Arellano, Y.Saito, K.Shimode, K.Somiya, H.Takeda, T.Tomaru, T.Uchiyama, T.Ushiba, K.Yamamoto, T.Yokozawa and H.Yuzurihara
• Classical and Quantum Gravity 34 225001
• The status of DECIGO
• S. Sato et al.
• Journal of Physics Conference Series, 840, 012010

• Design study and prototype experiment of the KAGRA output mode-cleaner
• Kazushiro Yano, Ayaka Kumeta, Kentaro Somiya
• Journal of Physics: Conference Series 716 012020
• Measurement of Schumann Resonance at Kamioka
• S. Atsuta, T. Ogawa, S. Yamaguchi, K. Hayama, A. Araya, N. Kanda, O. Miyakawa, S. Miyoki, A. Nishizawa, K. Ono, Y. Saito, K. Somiya, T. Uchiyama, M. Uyeshima and K. Yano
• Journal of Physics: Conference Series 716 012032
• Parametric signal amplification to create a stiff optical bar
• Kentaro Somiya, Yuu Kataoka, Jumpei Kato, Nana Saito, Kazushiro Yano
• arXiv:1403.1222[physics.optics]
• Phys. Lett. A 380, 521-524 (2016)
• Estimation of losses in a 300 m filter cavity and quantum noise reduction in the KAGRA gravitational-wave detector
• Eleonora Capocasa, Matteo Barsuglia, Jérôme Degallaix, Laurent Pinard, Nicolas Straniero, Roman Schnabel, Kentaro Somiya, Yoichi Aso, Daisuke Tatsumi, and Raffaele Flaminio
• Phys. Rev. D 93, 082004 (2016)

• Physical description of statistical hypothesis testing for a weak-value amplification experiment using a birefringent crystal
• Yuki Susa
• arXiv:1505.07199[quant-ph]
• Phys. Rev. A 92, 022118 (2015)
• Statistical hypothesis testing by weak-value amplification: Proposal and evaluation
• Yuki Susa, Saki Tanaka
• arXiv:1502.06334[quant-ph]
  
• Phys. Rev. A 92, 012112 (2015)
• Design study of the KAGRA output mode-cleaner
  
  • Ayaka Kumeta, Charlotte Bond, Kentaro Somiya
  • arXiv:1407.6080[physics.optics]
  • Optical Review 22, 149-152 (2015)

• Concepts and research for future detectors
• F.Acernese et al. (incl. Kentaro Somiya and Jumpei Kato)
• General Relativity and Gravitation, 46:1700 (2014)
• Method to reduce excess noise of a detuned cavity for application in KAGRA
• Shinichiro Ueda, Nana Saito, Daniel Friedrich, Yoichi Aso, Kentaro Somiya (for the KAGRA collaboration)
• arXiv:1402.4289[gr-pc]
• Class.Quantum Grav. 31, 095003 (2014)
• Highlights of 2013-2014

• Interferometer design of the KAGRA gravitational wave detector
• Yoichi Aso, Yuta Michimura, Kentaro Somiya, Masaki Ando, Osamu Miyakawa, Takanori Sekiguchi, Daisuke Tatsumi, Hiroaki Yamamoto
• arXiv:1306.6747[gr-pc]
• Phys. Rev. D 88, 043007 (2013)
• Reply to “Comment on ‘Optimal probe wave function of weak-value amplification' "
• Yuki Susa, Yutaka Shikano, Akio Hosoya
• arXiv:1304.1352[quant-ph]
• Phys. Rev. A 87, 046102 (2013)
• Underground gravitational wave observatories: KAGRA and ET
• Michele Punturo and Kentaro Somiya
• Int. J. Mod. Phys., 22, 1330010 (2013)

• Optimal Probe Wavefunction of Weak-Value Amplification
• Yuki Susa, Yutaka Shikano, Akio Hosoya
• arXiv:1203.0827[quant-ph]
• Phys. Rev. A 85, 052110 (2012)
• Detector configuration of KAGRA - the Japanese cryogenic gravitational-wave detector
• Kentaro Somiya, for the KAGRA Collaboration
• arXiv:1111.7185[gr-qc]
• Class.Quantum Grav. 29, 124007 (2012)
• Highlights of 2012-2013
• Length sensing and control strategies for the LCGT interferometer
• Yoichi Aso, Kentaro Somiya, Osamu Miyakawa for the LCGT Collaboration
• arXiv:1111.7147[gr-qc]
• Class.Quantum Grav. 29, 124008 (2012)
• Status of the AEI 10 m prototype
• K Dahl et al.
• Class.Quantum Grav. 29, 145005 (2012)
• The AEI 10 m Prototype Interferometer frequency control using the reference cavity and its angular control
• F Kawazoe et al.
• J.Phys.Conf.Ser. 363, 012012 (2012)
• Scientific objectives of Einstein Telescope
• B Sathyaprakash et al.
• Class.Quantum Grav. 29, 124013 (2012)

• Go to the LVK Publication webpage.