Publication

2026

Polarization-decomposed method for simulating inhomogeneous birefringence in laser-interferometric gravitational-wave detectors

Haoyu Wang, Yuta Michimura, Keiko Kokeyama, Daniel Brown, Yoichi Aso, …, Yutaro Enomoto, Takafumi Ushiba, Hiroaki Yamamoto, Masaki Ando, Kentaro Somiya

Physical Review D · 28 Sep 2026 · doi:10.1103/zzkn-w86h

Ground-based gravitational wave detector using rapidly repeated free-falling test masses

Shoki Iwaguchi, Bin Wu, Kurumi Umemura, Tomohiro Ishikawa, Kenji Tsuji, …, Soichiro Morisaki, Yoichi Aso, Tomotada Akutsu, Keiko Kokeyama, Seiji Kawamura

Physical Review D · 11 Aug 2026 · doi:10.1103/492m-xztx

Quantum noise from vacuum field injection in optical cavities with diffraction-related loss

Kurumi Umemura, Tomohiro Ishikawa, Kenji Tsuji, Shoki Iwaguchi, Yutaro Enomoto, Yuta Michimura, Kentaro Komori, Keiko Kokeyama, Seiji Kawamura

Applied Optics · 17 Apr 2026 · doi:10.1364/AO.580911

2025

Proof-of-principle experiment on a displacement-noise-free neutron interferometer for gravitational wave detection

Shoki Iwaguchi, Takuhiro Fujiie, Taro Nambu, Masaaki Kitaguchi, Yutaka Yamagata, …, Takafumi Onishi, Keiko Kokeyama, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura

Physical Review D · 06 Nov 2025 · doi:10.1103/yg4l-cj1t

2024

Feasibility of loop-gain tuning for general measurement systems inspired by quantum locking for DECIGO

T Ishikawa, Y Kawasaki, K Tsuji, R Shimizu, K Umemura, …, Y Enomoto, K Komori, S Doki, A Furusawa, S Kawamura

Classical and Quantum Gravity · 10 Oct 2024 · doi:10.1088/1361-6382/ad7cb6

Frequency-dependent squeezing for gravitational-wave detection through quantum teleportation

Yohei Nishino, Stefan Danilishin, Yutaro Enomoto, Teng Zhang

Physical Review A · 01 Aug 2024 · doi:10.1103/PhysRevA.110.022601

Quantum-enhanced optical phase-insensitive heterodyne detection beyond 3-dB noise penalty of image band

Keitaro Anai, Yutaro Enomoto, Hiroto Omura, Koji Nagano, Kiwamu Izumi, Mamoru Endo, Shuntaro Takeda

Optics Express · 13 May 2024 · doi:10.1364/OE.498691

Frequency-dependent squeezing for gravitational-wave detection through quantum teleportation

Yohei Nishino, Stefan Danilishin, Yutaro Enomoto, Teng Zhang

Springer Science and Business Media LLC · 07 Feb 2024 · doi:10.21203/rs.3.rs-3844852/v1

2023

Optimization of Quantum Noise in Space Gravitational-Wave Antenna DECIGO with Optical-Spring Quantum Locking Considering Mixture of Vacuum Fluctuations in Homodyne Detection

Kenji Tsuji, Tomohiro Ishikawa, Kentaro Komori, Koji Nagano, Yutaro Enomoto, …, Bin Wu, Shoki Iwaguchi, Yuki Kawasaki, Akira Furusawa, Seiji Kawamura

Galaxies · 09 Nov 2023 · doi:10.3390/galaxies11060111

Time-Domain Universal Linear-Optical Operations for Universal Quantum Information Processing

Kazuma Yonezu, Yutaro Enomoto, Takato Yoshida, Shuntaro Takeda

Physical Review Letters · 25 Jul 2023 · doi:10.1103/PhysRevLett.131.040601

Programmable time-multiplexed squeezed light source

Hiroko Tomoda, Takato Yoshida, Takahiro Kashiwazaki, Takeshi Umeki, Yutaro Enomoto, Shuntaro Takeda

Optics Express · 09 Jan 2023 · doi:10.1364/OE.476025

Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds

Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Tomohiro Ishikawa, …, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura

Physics Letters A · 01 Jan 2023 · doi:10.1016/j.physleta.2022.128581

2022

Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration

Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Masaaki Kitaguchi, …, Izumi Watanabe, Ryuma Shimizu, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura

Physics Letters A · 01 Jul 2022 · doi:10.1016/j.physleta.2022.128150

Neutron displacement noise-free interferometer for gravitational-wave detection

Atsushi Nishizawa, Shoki Iwaguchi, Yanbei Chen, Taigen Morimoto, Tomohiro Ishikawa, …, Ryuma Shimizu, Hirohiko Shimizu, Masaaki Kitaguchi, Yuta Michimura, Seiji Kawamura

Physical Review D · 08 Jun 2022 · doi:10.1103/PhysRevD.105.124017

Scattering loss in precision metrology due to mirror roughness

Yehonathan Drori, Johannes Eichholz, Tega Edo, Hiro Yamamoto, Yutaro Enomoto, Gautam Venugopalan, Koji Arai, Rana X. Adhikari

Journal of the Optical Society of America A · 27 Apr 2022 · doi:10.1364/JOSAA.455127

Coherent angular signal amplification using an optical cavity

Tomofumi Shimoda, Yuki Miyazaki, Yutaro Enomoto, Koji Nagano, Masaki Ando

Applied Optics · 27 Apr 2022 · doi:10.1364/AO.455485

Displacement-Noise-Free Neutron Interferometer for Gravitational Wave Detection Using a Single Mach-Zehnder Configuration

Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Masaaki Kitaguchi, …, Izumi Watanabe, Ryuma Shimizu, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura

Elsevier BV · 01 Jan 2022 · doi:10.2139/ssrn.4040628

Displacement-Noise-Free Interferometeric Gravitational-Wave Detector Using Unidirectional Neutrons with Four Speeds

Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Tomohiro Ishikawa, …, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura

Elsevier BV · 01 Jan 2022 · doi:10.2139/ssrn.4266891

Can the Phase of Radiation Pressure Fluctuations Be Flipped in a Single Path for Laser Interferometric Gravitational Wave Detectors?

Tomohiro Ishikawa, Shoki Iwaguchi, Bin Wu, Izumi Watanabe, Yuki Kawasaki, Ryuma Shimizu, Yutaro Enomoto, Yuta Michimura, Akira Furusawa, Seiji Kawamura

Elsevier BV · 01 Jan 2022 · doi:10.2139/ssrn.4068388

Can the Phase of Radiation Pressure Fluctuations Be Flipped in a Single Path for Laser Interferometric Gravitational Wave Detectors?

Tomohiro Ishikawa, Shoki Iwaguchi, Bin Wu, Izumi Watanabe, Yuki Kawasaki, Ryuma Shimizu, Yutaro Enomoto, Yuta Michimura, Akira Furusawa, Seiji Kawamura

Elsevier BV · 01 Jan 2022 · doi:10.2139/ssrn.4068387

2021

Programmable and sequential Gaussian gates in a loop-based single-mode photonic quantum processor

Yutaro Enomoto, Kazuma Yonezu, Yosuke Mitsuhashi, Kan Takase, Shuntaro Takeda

Science Advances · 12 Nov 2021 · doi:10.1126/sciadv.abj6624

Improving force sensitivity by amplitude measurements of light reflected from a detuned optomechanical cavity

Kentaro Komori, Takuya Kawasaki, Sotatsu Otabe, Yutaro Enomoto, Yuta Michimura, Masaki Ando

Physical Review A · 02 Sep 2021 · doi:10.1103/PhysRevA.104.L031501

Search for intermediate mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo

arXiv preprint arXiv:2105.15120 · 01 Jul 2021 · [no id info]

Improving force sensitivity by amplitude measurement of light reflected from a detuned optomechanical cavity

arXiv preprint arXiv:2105.10510 · 01 Jul 2021 · [no id info]

Demonstration of a loop-based single-mode versatile photonic quantum processor

arXiv preprint arXiv:2105.02447 · 01 Jul 2021 · [no id info]

Observation of Gravitational Waves from Two Neutron Star–Black Hole Coalescences

R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, …, Z.-H. Zhu, A. B. Zimmerman, Y. Zlochower, M. E. Zucker, J. Zweizig

The Astrophysical Journal Letters · 29 Jun 2021 · doi:10.3847/2041-8213/ac082e

Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run

R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, …, Z. Zhou, X. J. Zhu, Z.-H. Zhu, M. E. Zucker, J. Zweizig

Physical Review Letters · 16 Jun 2021 · doi:10.1103/physrevlett.126.241102

Reduction of quantum noise using the quantum locking with an optical spring for gravitational wave detectors

Rika Yamada, Yutaro Enomoto, Izumi Watanabe, Koji Nagano, Yuta Michimura, …, Shoki Iwaguchi, Tomohiro Ishikawa, Masaki Ando, Akira Furusawa, Seiji Kawamura

Physics Letters A · 01 Jun 2021 · doi:10.1016/j.physleta.2021.127365

Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910

R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, …, D. Antonopoulou, Z. Arzoumanian, T. Enoto, C. M. Espinoza, S. Guillot

The Astrophysical Journal Letters · 31 May 2021 · doi:10.3847/2041-8213/abffcd

Radiative Cooling of the Thermally Isolated System in KAGRA Gravitational Wave Telescope

T. Akutsu, M. Ando, K. Arai, Y. Arai, S. Araki, …, T. Yoshioka, H. Yuzurihara, S. Zeidler, Y. Zhao, Z.-H. Zhu

Journal of Physics: Conference Series · 01 Apr 2021 · doi:10.1088/1742-6596/1857/1/012002

Cryogenic suspension design for a kilometer-scale gravitational-wave detector

Takafumi Ushiba, Tomotada Akutsu, Sakae Araki, Rishabh Bajpai, Dan Chen, …, Ayako Ueda, Helios Vocca, Tomohiro Yamada, Kazuhiro Yamamoto, Simon Zeidler

Classical and Quantum Gravity · 19 Mar 2021 · doi:10.1088/1361-6382/abe9f3

Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, S Zeidler, M Zhan, H Zhang, Y Zhao, Z-H Zhu

Classical and Quantum Gravity · 05 Mar 2021 · doi:10.1088/1361-6382/abd922

Overview of KAGRA: Calibration, detector characterization, physical environmental monitors, and the geophysics interferometer

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, S Zeidler, M Zhan, H Zhang, Y Zhao, Z -H Zhu

Progress of Theoretical and Experimental Physics · 22 Feb 2021 · doi:10.1093/ptep/ptab018

2020

Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA

B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, …, X. J. Zhu, Z. H. Zhu, A. B. Zimmerman, M. E. Zucker, J. Zweizig

Living Reviews in Relativity · 28 Sep 2020 · doi:10.1007/s41114-020-00026-9

Overview of KAGRA: Detector design and construction history

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, T Yoshioka, H Yuzurihara, S Zeidler, Y Zhao, Z -H Zhu

Progress of Theoretical and Experimental Physics · 17 Aug 2020 · doi:10.1093/ptep/ptaa125

Overview of KAGRA: KAGRA science

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, S Zeidler, M Zhan, H Zhang, Y Zhao, Z -H Zhu

Progress of Theoretical and Experimental Physics · 12 Aug 2020 · doi:10.1093/ptep/ptaa120

Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA

Yuta Michimura, Kentaro Komori, Yutaro Enomoto, Koji Nagano, Atsushi Nishizawa, …, Masaki Ando, Kazuhiro Yamamoto, Kazuhiro Hayama, Sadakazu Haino, Kentaro Somiya

Physical Review D · 24 Jul 2020 · doi:10.1103/PhysRevD.102.022008

Application of independent component analysis to the iKAGRA data

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, T Yoshioka, H Yuzurihara, S Zeidler, Y Zhao, Z -H Zhu

Progress of Theoretical and Experimental Physics · 01 May 2020 · doi:10.1093/ptep/ptaa056

Attonewton-meter torque sensing with a macroscopic optomechanical torsion pendulum

Kentaro Komori, Yutaro Enomoto, Ching Pin Ooi, Yuki Miyazaki, Nobuyuki Matsumoto, Vivishek Sudhir, Yuta Michimura, Masaki Ando

Physical Review A · 17 Jan 2020 · doi:10.1103/PhysRevA.101.011802

An arm length stabilization system for KAGRA and future gravitational-wave detectors

T Akutsu, M Ando, K Arai, K Arai, Y Arai, …, T Yoshioka, H Yuzurihara, S Zeidler, Y Zhao, Z-H Zhu

Classical and Quantum Gravity · 13 Jan 2020 · doi:10.1088/1361-6382/ab5c95

2019

Design and experimental demonstration of a laser modulation system for future gravitational-wave detectors

Kohei Yamamoto, Keiko Kokeyama, Yuta Michimura, Yutaro Enomoto, Masayuki Nakano, …, Takahiro Yamamoto, Takaaki Yokozawa, Yuta Fujikawa, Nobuyuki Fujii, Takaaki Kajita

Classical and Quantum Gravity · 27 Sep 2019 · doi:10.1088/1361-6382/ab4489

First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA

T Akutsu, M Ando, K Arai, Y Arai, S Araki, …, T H Yoon, T Yoshioka, H Yuzurihara, S Zeidler, Z-H Zhu

Classical and Quantum Gravity · 23 Jul 2019 · doi:10.1088/1361-6382/ab28a9

Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA

Y Akiyama, T Akutsu, M Ando, K Arai, Y Arai, …, T Yokozawa, T Yoshioka, H Yuzurihara, S Zeidler, Z-H Zhu

Classical and Quantum Gravity · 12 Apr 2019 · doi:10.1088/1361-6382/ab0fcb

KAGRA: 2.5 generation interferometric gravitational wave detector

T. Akutsu, M. Ando, K. Arai, Y. Arai, S. Araki, …, T. H. Yoon, T. Yoshioka, H. Yuzurihara, S. Zeidler, Z.-H. Zhu

Nature Astronomy · 08 Jan 2019 · doi:10.1038/s41550-018-0658-y

2018

Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector

Yuta Michimura, Kentaro Komori, Atsushi Nishizawa, Hiroki Takeda, Koji Nagano, Yutaro Enomoto, Kazuhiro Hayama, Kentaro Somiya, Masaki Ando

Physical Review D · 12 Jun 2018 · doi:10.1103/physrevd.97.122003

Direct approach for the fluctuation-dissipation theorem under nonequilibrium steady-state conditions

Kentaro Komori, Yutaro Enomoto, Hiroki Takeda, Yuta Michimura, Kentaro Somiya, Masaki Ando, Stefan W. Ballmer

Physical Review D · 03 May 2018 · doi:10.1103/physrevd.97.102001

Construction of KAGRA: an underground gravitational-wave observatory

T Akutsu, M Ando, S Araki, A Araya, T Arima, …, M Uyeshima, J F J van den Brand, J V van Heijningen, S Yamaguchi, A Yanagida

Progress of Theoretical and Experimental Physics · 01 Jan 2018 · doi:10.1093/ptep/ptx180

2017

Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope

Yuta Michimura, Tomofumi Shimoda, Takahiro Miyamoto, Ayaka Shoda, Koki Okutomi, …, Takashi Uchiyama, Takafumi Ushiba, Kazuhiro Yamamoto, Takaaki Yokozawa, Hirotaka Yuzurihara

Classical and Quantum Gravity · 25 Oct 2017 · doi:10.1088/1361-6382/aa90e3

2016

Mitigation of radiation-pressure-induced angular instability of a Fabry–Perot cavity consisting of suspended mirrors

Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, Seiji Kawamura

Physics Letters A · 01 Dec 2016 · doi:10.1016/j.physleta.2016.09.056

Standard quantum limit of angular motion of a suspended mirror and homodyne detection of a ponderomotively squeezed vacuum field

Yutaro Enomoto, Koji Nagano, Seiji Kawamura

Physical Review A · 20 Jul 2016 · doi:10.1103/physreva.94.012115

Observation of reduction of radiation-pressure-induced rotational anti-spring effect on a 23 mg mirror in a Fabry–Perot cavity

Yutaro Enomoto, Koji Nagano, Masayuki Nakano, Akira Furusawa, Seiji Kawamura

Classical and Quantum Gravity · 20 Jun 2016 · doi:10.1088/0264-9381/33/14/145002

New method to measure the angular antispring effect in a Fabry–Perot cavity with remote excitation using radiation pressure

Koji Nagano, Yutaro Enomoto, Masayuki Nakano, Akira Furusawa, Seiji Kawamura

Physics Letters A · 01 Mar 2016 · doi:10.1016/j.physleta.2016.01.007