Details of a Researcher - Watanabe, Shinichi

Watanabe, Shinichi

写真a

Affiliation: Faculty of Science and Technology, Department of Physics (Yagami)

Position: Professor

External Links

Career 【 Display / hide 】

1999.04

-

2002.03

Research Fellow of the Japan Society for the Promotion of Science (DC1)
2002.04

-

2004.03

JSPS Postdoctoral Fellow for Research Abroad
2004.04

-

2004.07

Collaborator Scientific
2004.08

-

2007.03

Assistant Professor (University of Tokyo)
2007.03

-

2011.03

Assistant Professor

Academic Background 【 Display / hide 】

1997.03

The University of Tokyo, Faculty of Science, Department of Physics

University, Graduated
1999.03

The University of Tokyo, Graduate School of Science, Physics Department

Graduate School, Completed, Master's course
2002.03

The University of Tokyo, Graduate School of Science, Physics Department

Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide 】

Doctor of Science, The University of Tokyo, Coursework, 2002.03

Research Areas 【 Display / hide 】

Natural Science / Semiconductors, optical properties of condensed matter and atomic physics (Physical Properties I)
Nanotechnology/Materials / Optical engineering and photon science (Applied Optics/Quantum Optical Engineering)

Research Keywords 【 Display / hide 】

Terahertz Spectroscopy
Semiconductor Nanostructures
Organic Conductors
Ultrafast Spectroscopy

Books 【 Display / hide 】

テラヘルツ波の発生、検出、制御技術と最新応用

渡邉紳一,岡野真人, 技術情報協会, 2024.07, Page： 566

Scope: 第５章第４節テラヘルツ偏光計測法による黒色ゴムの内部構造の非破壊検査技術, Contact page： 426-435
基礎高分子科学第２版

渡邉紳一, 2020.01

Papers 【 Display / hide 】

Fluctuations in Spin Dynamics Excited by Pulsed Light

T. Sato, S. Watanabe, M. Matsuo, and T. Kato

Phys. Rev. Lett. 134 ( 10 ) 106702 2025.03

Research paper (scientific journal), Joint Work, Accepted

　View Summary

We theoretically investigate nonequilibrium spin fluctuations in a ferromagnet induced by a light pulse. Using a Lindblad equation consistent with the Landau-Lifshitz-Gilbert equation, we compute the autocorrelation function of magnetization. Our analysis reveals that this function comprises both thermal and nonequilibrium components. To examine the latter in detail, we introduce a Fano factor similar to nonequilibrium current noise in electronic circuits. We demonstrate that this factor encapsulates insights into the transfer of spin units to the environment. Our findings lay the groundwork for nonequilibrium spin noise spectroscopy, offering valuable insights into spin relaxation dynamics.
Ultrafast movies of the photo-induced phonon and magnon propagation using dual frequency-comb technology

D. Nishikawa, K. Maezawa, R. Shibata, S. Fujii, and S. Watanabe

Opt. Lett. 50 ( 6 ) 1929 - 1932 2025.03

Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted
Gyro-spintronic material science using vorticity gradient in solids

Y. Nozaki, H. Sukegawa, S. Watanabe, S. Yunoki, T. Horaguchi, H. Nakayama, K. Yamanoi, Z. Wen, C. He, J. Song, T. Ohkubo, S. Mitani, K. Maezawa, D. Nishikawa, S. Fujii, M. Matsuo, J. Fujimoto, and S. Maekawa

Science and Technology of Advanced Materials (STAM) 26 ( 1 ) 2428153 2025.02

Joint Work, Accepted

　View Summary

We present a novel method for generating spin currents using the gyromagnetic effect, a phenomenon discovered over a century ago. This effect, crucial for understanding the origins of magnetism, enables the coupling between various macroscopic rotational motions and electron spins. While higher rotational speeds intensify the effect, conventional mechanical rotations, typically, below 10,000 RPM, produce negligible results comparable to geomagnetic fluctuations, limiting applied research. Our studies demonstrate that spin current generation comparable to that of rare metals can be achieved through atomic rotations induced by GHz-range surface acoustic waves and the rotational motion of conduction electrons in metallic thin films with nanoscale gradient modulation of electrical conductivity. These effects, termed the acoustic gyromagnetic effect and the current-vorticity gyromagnetic effect, are significant in different contexts. The acoustic gyromagnetic effect is notable in high-conductivity materials like aluminum and copper, which are more abundant than conventional spintronics materials with strong spin–orbit interactions (SOIs). Conversely, the current-vorticity gyromagnetic effect requires a large conductivity gradient to produce current vorticity efficiently. This is achieved by using composition gradient structures from highly conductive metals to poorly conductive oxides or semiconductors. Consequently, unlike traditional strong-SOI materials, we can create highly efficient spin current generators with low energy dissipation due to reduced Joule loss.
Architecture for coherent dual-comb spectroscopy and low-noise photonic microwave generation using mechanically actuated soliton microcombs

T. Murakami, K. Wada, S. Kogure, R. Takabayashi, L. Yang, R. Shibata, H. Kumazaki, S. Watanabe, A. Ishizawa, T. Tanabe, and S. Fujii

Opt. Lett. 50 ( 4 ) 1417 - 1420 2025.02

Research paper (scientific journal), Joint Work, Accepted
Integer-locking condition for stable dual-comb interferometry in situations with fluctuating frequency-comb repetition rates.

R. Shibata, S. Fujii, and S. Watanabe

Opt. Express 32 ( 10 ) 17373 - 17387 2024.04

Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted
- Access to Document (DOI)

Papers, etc., Registered in KOARA 【 Display / hide 】

Development of time-dependent stain observation system for macromolecular destruction phenomenon probed by terahertz spectroscopy

Watanabe, Shin'ichi

科学研究費補助金研究成果報告書 2020
Development of the polarization-sensitive dual comb spectroscopy

Watanabe, Shinichi

科学研究費補助金研究成果報告書 2017
Research on dynamical process of spinwave-assisted magnetization reversal and observation of spinwaves excited along thickness direction

Watanabe, Shinichi

科学研究費補助金研究成果報告書 2016
Development and application of high speed, high accuracy, and time-dependent spin dynamics imaging measurement system

Watanabe, Shinichi

科学研究費補助金研究成果報告書 2014
Development of the reflection-type terahertz polarizing microscope

Watanabe, Shinichi

科学研究費補助金研究成果報告書 2013

Reviews, Commentaries, etc. 【 Display / hide 】

光周波数コムを用いた微小振動量計測とスピン物性計測への応用

渡邉紳一

レーザー研究 52 ( 7 ) 331 - 335 2024.07

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, Lead author, Last author, Corresponding author
デュアルコム・サニャック干渉計を用いた高精度な表面弾性波の計測

渡邉紳一

光学 53 ( 2 ) 2024.02

Article, review, commentary, editorial, etc. (scientific journal), Single Work, Lead author, Last author, Corresponding author
テラヘルツ誘電分光法によるカーボンブラック充填ゴムの変形にともなう不可逆誘電率変化の検査

岡野真人、水田圭祐、渡邉紳一、森本崇宏、阿多誠介

検査技術 27 ( 10 ) 15 - 20 2022.10

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Joint Work
テラヘルツセンシングで見えるもの～高分子材料評価への応用～

渡邉紳一, 岡野真人

一般財団法人電波技術協会協会報FORN ( 11 ) 2020.11

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Joint Work
テラヘルツ偏光計測による高分子材料の内部異方性検査

岡野真人, 渡邉紳一

プラスチックス ( 10 ) 22 - 25 2019.10

Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Joint Work

Presentations 【 Display / hide 】

フローティング・ゾーン法による反強磁性体Sm0.7Er0.3FeO3単結晶の作成と均一性評価

安高幸佑、生駒一輝、栗原貴之、渡邉紳一

日本物理学会2025年春季大会 (オンライン) ,

2025.03
,
Poster presentation
Sagnac interferometry with proper phase compensation for visualizing surface acoustic wave propagation on magnetic thin film

K. Maezawa, R. Shibata, S. Fujii, and S. Watanabe

APS Global Physiscs Summit ( Anaheim, CA and virtual ) ,

2025.03
,
Poster presentation
表面弾性波による単層WSe2の励起子発光特性の動的変調

高橋悠太、山本拓海、前澤和来、熊崎基、渡邉紳一、藤井瞬

第72回応用物理学会春季学術講演会 (東京理科大学野田キャンパス) ,

2025.03
,
Oral presentation (general)
デュアルコム非同期光サンプリングによる量子ドット集合体の低温下ポンププローブ信号空間マッピング

阿讃坊元、柴田理来、高橋雄士郎、赤羽浩一、渡邉紳一、早瀬潤子

第72回応用物理学会春季学術講演会 (東京理科大学野田キャンパス) ,

2025.03
,
Oral presentation (general)
機械駆動型マイクロコムによるデュアルコムの実証

村上達希、和田幸四郎、木暮蒼真、高林諒明、楊柳、柴田理来、熊崎基、渡邉紳一、石澤淳、田邉考純、藤井瞬

第72回応用物理学会春季学術講演会 (東京理科大学野田キャンパス) ,

2025.03
,
Oral presentation (general)

Research Projects of Competitive Funds, etc. 【 Display / hide 】

究極の絶対距離計測精度への挑戦：1 mの距離を1 pmの精度で決定する

2024.07

-

2026.03

日本学術振興会, 科学研究費助成事業, 挑戦的研究(萌芽), Research grant, Principal investigator
光ビッグデータの遠隔共有による次世代量子計測・量子通信技術の確立

2024.04

-

Present

慶應義塾大学, 次世代研究プロジェクト推進プログラム, Other, Principal investigator
Visualisation and manipulation of the mechano-spin conversion by non-contact optical measurement

2023.04

-

2026.03

基盤研究(B), Principal investigator
ナノ構造制御と計算科学を融合した傾斜材料開発とスピンデバイス応用

2019.10

-

2025.03

JST, CREST, Commissioned ｒesearch, Coinvestigator(s)
高分子破壊現象プローブのための動的テラヘルツ劣化観察装置の開発

2018.04

-

2021.03

Grant-in-Aid for Scientific Research, Research grant, Principal investigator

Works 【 Display / hide 】

テラヘルツ光で見るゴム深部のひずみ ─光でミクロの構造に迫る─

渡邉紳一

JSTニュース２０１７年９月号,

2017.09

-

Present
,
Other, Single
日経産業新聞　朝刊８面

2017.01

-

Present
,
Other, Joint
化学工業日報　朝刊8面

WATANABE SHINICHI

2012.07

-

Present
,
Other
日経産業新聞　朝刊11面

WATANABE SHINICHI

2012.07

-

Present
,
Other
日刊工業新聞　朝刊17面

WATANABE SHINICHI

2012.07

-

Present
,
Other

Intellectual Property Rights, etc. 【 Display / hide 】

光学測定装置、光学測定方法、及び応力検査方法

Date applied： PCT/JP2017/030814 2017.08

Patent, Joint
光学測定装置、光学測定方法、及び応力検査方法

Date applied：特願2016-167370 2016.08

Patent, Joint
デュアルコム分光法を用いた偏光計測装置及び偏光計測方法

Date applied：特願2016-017537 2016.02

Patent, Joint
偏波解析装置、及び偏波解析方法

Date applied：特願2015-124617 2015.06

Patent, Joint

Awards 【 Display / hide 】

第42回（2017年春季）応用物理学会講演奨励賞受賞

森脇淳仁、岡野真人、渡邉紳一, 2017.09, 応用物理学会, テラヘルツ偏光計測による黒色ゴム材料の内部歪みイメージング
Best Student Papers

K. Sumihara, S. Okubo, M. Okano, H. Inaba, and S. Watanabe, 2017.03, Optical Society of America, Development of Precise Polarization Measurement System Using Dual-comb Spectroscopy
The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, The Young Scientists’ Prize

Shinichi Watanabe, 2014.04, Ministry of Education, Culture, Sports, Science and Technology, テラヘルツ新分光技術の開拓と物質科学応用に関する研究
Young Scientist Award of the Physical Society of Japan

WATANABE SHINICHI, 2012.03, The Physical Society of Japan, Experimental studies on non-equilibrium carrier dynamics in low-dimensional organic materials by time-resolved terahertz spectroscopy
第２２回（２００７年度）応用物理学会講演奨励賞

WATANABE SHINICHI, 2007.09, The Japan Society of Applied Physics, 高空間分解能を有する超小型テラヘルツ分光装置の開発

Courses Taught 【 Display / hide 】

TOPICS IN OPTICAL CONDENSED MATTER PHYSICS

2025
SOLID STATE PHYSICS 3

2025
SOLID STATE PHYSICS 1

2025
PHYSICS LABORATORIES 2

2025
PHYSICS LABORATORIES 1

2025

Courses Previously Taught 【 Display / hide 】

物性物理学第１

Keio University

2020.04

-

2021.03
,
Autumn Semester, Lecture
物性物理学第３

Keio University

2020.04

-

2021.03
,
Autumn Semester, Lecture, Lecturer outside of Keio
物理学実験I,II

Keio University

2020.04

-

2021.03
,
Full academic year, Laboratory work/practical work/exercise
論文講読発表

慶應義塾大学

2020.04

-

2021.03
物理学セミナー

慶應義塾大学

2020.04

-

2021.03
,
Seminar, Within own ｆaculty

Social Activities 【 Display / hide 】

東京大学理学系ＣＯＥ合同若手シンポジウム実行委員会

2006.02

-

2006.07

　View Summary

物理学専攻教員代表
第10回関東光科学若手研究会企画・運営

2015.04

-

2015.10

Memberships in Academic Societies 【 Display / hide 】

高分子学会,

2015.10

-

2023.12
The Optical Society (OSA),

2013.01

-

Present
日本磁気学会,

2011.10

-

Present
テラヘルツテクノロジーフォーラム委員会,研究交流委員会,基礎部門,

2010.06

-

Present
応用物理学会,

2007.01

-

Present

Committee Experiences 【 Display / hide 】

2024.05

-

2025.04

Program Committee (Chief), ALPS2025 - The 14th Advanced Lasers and Photon Sources
2024.04

-

2025.03

領域５副代表, 一般社団法人日本物理学会
2023.07

-

2024.08

Technical Program Committee (C6. Optical and Photonic Metrology), CLEO-PR 2024
2023.05

-

2024.04

Program Committee, ALPS2024 - The 13th Advanced Lasers and Photon Sources
2022.05

-

2023.04

Program Committee, ALPS2023 - The 12th Advanced Lasers and Photon Sources