Rchr
J-GLOBAL ID：202301013476253570   Update date: Sep. 20, 2024

Kobayashi Takumi

コバヤシ タクミ | Kobayashi Takumi
Affiliation and department：
National Institute of Advanced Industrial Science and Technology (AIST) National Metrology Institute of Japan (NMIJ), Research Institute for Physical Measurement, Time Standards Group

About National Institute of Advanced Industrial Science and Technology (AIST) National Metrology Institute of Japan (NMIJ), Research Institute for Physical Measurement, Time Standards Group


Job title： Senior Researcher
Research field  (3)： Applied physics - general ,  Semiconductors, optical and atomic physics ,  Particle, nuclear, cosmic-ray, and astrophysics - experiment
Research keywords  (5)： 周波数標準 ,  光格子時計 ,  量子エレクトロニクス ,  原子物理学 ,  暗黒物質
Research theme for competitive and other funds  (3)：
  • 2022 - 2026 Yb光格子時計の長期運転による新規物理現象の探索
  • 2017 - 2022 The realisation of an optical time scale based on optical frequency standards
  • 2017 - 2021 Development of an optical clock for the next-generation time keeping
Papers (48)：
  • Akiko Nishiyama, Sho Okubo, Takumi Kobayashi, Akio Kawasaki, Hajime Inaba. Measurement of transition frequencies and hyperfine constants of molecular iodine at 520.2 nm. Journal of the Optical Society of America B. 2024
  • Youssef S Hassan, Takumi Kobayashi, Tobias Bothwell, Jacob L Seigel, Benjamin D Hunt, Kyle Beloy, Kurt Gibble, Tanner Grogan, Andrew D Ludlow. Ratchet loading and multi-ensemble operation in an optical lattice clock. Quantum Science and Technology. 2024. 9. 4. 045023-045023
  • Piotr Morzyński, Sławomir Bilicki, Marcin Bober, Domagoj Kovačić, Roman Ciurylo, Michal Zawada, Jerzy Nawrocki, Piotr Dunst, Takumi Kobayashi, Kazumoto Hosaka, et al. Intercontinental frequency ratio measurement of 171Yb and 88Sr optical lattice clocks. Metrologia. 2024
  • Akio Kawasaki, Takumi Kobayashi, Akiko Nishiyama, Takehiko Tanabe, Masami Yasuda. Isotope-shift analysis with the 4f146s2 1S0 - 4f135d6s2 (J = 2) transition in ytterbium. Physical Review A. 2024. 109. 6
  • Takumi Kobayashi, Daisuke Akamatsu, Kazumoto Hosaka, Yusuke Hisai, Akiko Nishiyama, Akio Kawasaki, Masato Wada, Hajime Inaba, Takehiko Tanabe, Tomonari Suzuyama, et al. Generation of a precise time scale assisted by a near-continuously operating optical lattice clock. Physical Review Applied. 2024. 21. 6
ｍore...
MISC (6)：
  • Hisai Y, Ikeda K, Horikiri T, Kobayashi T, Yoshii K, Hong F.-L. 22aBK-5 Laser frequency stabilization by phase and frequency locking. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 786-786
  • Sugata T, Yamada Y, Okubo S, Kobayashi T, Inaba H, Onae A, Nakagawa K, Yoshii K, Hong F.-L. 22pBK-9 Development and frequency control of a mode-locked fiber laser with low repetition frequency. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 834-834
  • Yamamoto Hiroki, Okubo Sho, Kobayashi Takumi, Onae Atsushi, Inaba Hajime, Minoshima Kaoru, Yoshii Kazumichi, Hong Feng-Lei. 22pBK-11 Development of a 532-nm frequency-stabilized laser for an astro-comb. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 836-836
  • Kobayashi Takumi, Akamatsu Daisuke, Nishida Yoshiki, Tanabe Takehiko, Yasuda Masami, Hong Feng-Lei, Hosaka Kazumoto. 22aBK-12 Development of a light source at 399 nm for laser cooling of ytterbium using a PPLN waveguide. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 793-793
  • Yamada Yuko, Sugata Tetsuya, Okubo Sho, Kobayashi Takumi, Inaba Hajime, Onae Atsushi, Yoshii Kazumichi, Hong Feng-Lei. 22pBK-10 Amplification and octave spanning of a mode-locked fiber laser with low repetition frequency. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 835-835
ｍore...
Patents (1)：
Works (1)：
  • Yb optical lattice clock NMIJ-Yb1 that can calibrate the frequency of International Atomic Time
    2020 - 現在
Education (3)：
  • 2009 - 2014 The University of Tokyo Graduate School of Science Department of Physics
  • 2005 - 2009 Keio University Faculty of Science and Technology Department of Physics
  • 2002 - 2005 岡山県立岡山朝日高等学校
Work history (5)：
  • 2019/10 - 現在 National Institute of Advanced Industrial Science and Technology
  • 2023/07 - 2024/07 National Institute of Standards and Technology Neutral Atom Optical Clocks Group Visiting Researcher
  • 2015/04 - 2019/09 National Institute of Advanced Industrial Science and Technology
  • 2014/10 - 2015/03 Yokohama National University
  • 2014/04 - 2014/09 産業技術総合研究所 計測標準研究部門 産総研特別研究員
Awards (1)：
  • 2024/03 - National Institute of Advanced Industrial Science and Technology AIST Best Paper Award Demonstration of the nearly continuous operation of an 171Yb optical lattice clock for half a year, Metrologia Vol.57, No. 6, 065021, 2020
Association Membership(s) (1)：
日本物理学会
※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

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