Research theme for competitive and other funds (5)：
2022 - 2025 Search for the time-variation of the fundamental physical constant by long-term operation of an optical lattice clock using a light-controlled slow atomic beam source
2015 - 2018 Development of an light-controlled cold atomic beam source for a transportable optical lattice clock
2011 - 2013 Search for the blue-detuned magic wavelength for the ytterbium optical lattice clock
2003 - 2005 準安定状態ストロンチウム原子のためのクライオトラップの開発
2000 - 2001 Development of an ultracold bright atomic beam and its application to atom interferometer
Papers (70)：
Takumi Kobayashi, Akifumi Takamizawa, Daisuke Akamatsu, Akio Kawasaki, Akiko Nishiyama, Kazumoto Hosaka, Yusuke Hisai, Masato Wada, Hajime Inaba, Takehiko Tanabe, et al. Search for Ultralight Dark Matter from Long-Term Frequency Comparisons of Optical and Microwave Atomic Clocks. Physical Review Letters. 2022
Takehiko Tanabe, Jiaxing Ye, Tomonari Suzuyama, Takumi Kobayashi, Yu Yamaguchi, Masami Yasuda. Potential for improving the local realization of coordinated universal time with a convolutional neural network. Review of Scientific Instruments. 2019
和田雅人, 小林拓実, 赤松大輔, 安田正美, 保坂一元, 稲場肇. Study for the improvement of the optical frequency measurement uncertainty. 応用物理学会春季学術講演会講演予稿集(CD-ROM). 2021. 68th
小林拓実, 赤松大輔, 保坂一元, 久井裕介, 稲場肇, 鈴山智也, HONG Feng-Lei, 安田正美. Demonstration of continuous operation of an Yb optical lattice clock towards contribution to the International Atomic Time. 日本物理学会講演概要集(CD-ROM). 2020. 75. 1
赤松大輔, 小林拓実, 保坂一元, 久井裕介, 稲場肇, HONG F.-L., 安田正美. Towards a precise timescale with a continuously operating Yb optical lattice clock. 日本物理学会講演概要集(CD-ROM). 2020. 75. 1
田邊健彦, 大久保章, 稲場肇, 小林拓実, 高見澤昭文, 赤松大輔, 安田正美. Development of the frequency metrology link system at the National Metrology Institute of Japan (NMIJ). 電気学会研究会資料. 2020. ECT-20-055-058
