論文リスト(2013年以降)

[2025]
"Improved absolute frequency measurement of ¹⁷¹Yb at NMIJ with uncertainty below 2 x 10^-16,"
T. Kobayashi, A. Nishiyama, K. Hosaka, D. Akamatsu, A. Kawasaki, M. Wada, H. Inaba, T. Tanabe, and M. Yasuda,
Metrologia 62, 025006 (2025).

[2024]
"Intercontinental frequency ratio measurement of ¹⁷¹Yb and ⁸⁸Sr optical lattice clocks,"
P. Morzyński et al.,
Metrologia 61, 045009 (2024).

"Isotope-shift analysis with the 4f¹⁴6s^{2 1}S₀ − 4f¹³5d6s² (J = 2) transition in ytterbium,"
A. Kawasaki, T. Kobayashi, A. Nishiyama, T. Tanabe, and M. Yasuda,
Phys. Rev. A 109, 062806 (2024).

"Generation of a precise time scale assisted by a near-continuously operating optical lattice clock,"
T. Kobayashi, D. Akamatsu, K. Hosaka, Y. Hisai, A. Nishiyama, A. Kawasaki, M. Wada, H. Inaba, T. Tanabe, T. Suzuyama, F.-L. Hong, and M. Yasuda,
Phys. Rev. Applied 21, 064015 (2024).

"Line-shape study of CO perturbed by N₂ with mid-infrared frequency comb-based Fourier-transform spectroscopy,"
A. Nishiyama, G. Kowzan, D. Charczun, R. Ciuryło, N. Coluccelli, and P. Masłowski,
Measurement 227, 114273 (2024).

"Roadmap towards the redefinition of the second,"
N. Dimarcq et al.,
Metrologia 61, 012001 (2024).

[2023]
"Tracking a nonrelativistic charge with an array of Rydberg atoms,"
A. Kawasaki,
Phys. Rev. Research 5, 043178 (2023).

"Observation of the 4f¹⁴6s^{2 1}S₀ − 4f¹³5d6s² (J = 2) clock transition at 431 nm in ¹⁷¹Yb,"
A. Kawasaki, T. Kobayashi, A. Nishiyama, T. Tanabe, and M. Yasuda,
Phys. Rev. A. 107, L060801 (2023).

[2022]
"Search for Ultralight Dark Matter from Long-Term Frequency Comparisons of Optical and Microwave Atomic Clocks,"
T. Kobayashi, A. Takamizawa, D. Akamatsu, A. Kawasaki, A. Nishiyama, K. Hosaka, Y. Hisai, M. Wada, H. Inaba, T. Tanabe, and M. Yasuda,
Phys. Rev. Lett. 129, 241301 (2022).

"Decoherence of Atomic Ensembles in Optical Lattice Clocks by Gravity,"
A. Kawasaki,
J. Phys. Soc. Jpn. 91, 034301 (2022).

[2021]
"Improved frequency ratio measurement with ⁸⁷Sr and ¹⁷¹Yb optical lattice clocks at NMIJ,"
Y. Hisai, D. Akamatsu, T. Kobayashi, K. Hosaka, H. Inaba, F.-L. Hong, and M. Yasuda,
Metrologia, 58, 015008 (2021).

[2020]
"Demonstration of the nearly continuous operation of an ¹⁷¹Yb optical lattice clock for half a year,"
T. Kobayashi, D. Akamatsu, K. Hosaka, Y. Hisai, M. Wada, H. Inaba, T. Suzuyama, F.-L. Hong, and M. Yasuda,
Metrologia, 57, 065021 (2020).

[2019]
"Potential for improving the local realization of coordinated universal time with a convolutional neural network,"
T. Tanabe, J. Ye, T. Suzuyama, T. Kobayashi, Y. Yamaguchi, and M. Yasuda,
Rev. Sci. Instrum, 90, 125111 (2019).

"A relocking scheme for optical phase locking using a digital circuit with an electrical delay line,"
T. Kobayashi, D. Akamatsu, K. Hosaka, and M. Yasuda,
Rev. Sci. Instrum, 90, 103002 (2019).

"Development of 8-branch Er:fiber frequency comb for Sr and Yb optical lattice clocks,"
Y. Hisai, D. Akamatsu, T. Kobayashi, S. Okubo, H. Inaba, K. Hosaka, M. Yasuda, and F.-L. Hong,
Opt. Express, 27(5), 6404 (2019).

[2018]
"Uncertainty evaluation of an ¹⁷¹Yb optical lattice clock at NMIJ,"
T. Kobayashi, D. Akamatsu, Y. Hisai, T. Tanabe, H. Inaba, T. Suzuyama, F.-L. Hong, K. Hosaka, and M. Yasuda,
IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 65(12), 2449 (2018).

"Dual-Mode Operation of an Optical Lattice Clock Using Strontium and Ytterbium Atoms,"
D. Akamatsu, T. Kobayashi, Y. Hisai, T. Tanabe, K. Hosaka, M. Yasuda, and F.-L. Hong,
IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 65(6), 1069 (2018).

"A frequency-stabilized light source at 399 nm using an Yb hollow-cathode lamp,"
T. Tanabe, D. Akamatsu, H. Inaba, S. Okubo, T. Kobayashi, M. Yasuda, K. Hosaka, and F.-L. Hong,
Jpn. J. Appl. Phys. 57(6), 062501 (2018).

[2017]
"Laser-Controlled Cold Ytterbium Atom Source for Transportable Optical Clocks,"
M. Yasuda, T. Tanabe, T. Kobayashi, D. Akamatsu, T. Sato, A. Hatakeyama,
J. Phys. Soc. Jpn. 86, 125001 (2017).

[2016]
"Second harmonic generation at 399 nm resonant on the ¹S₀-¹P₁ transition of ytterbium using a periodically poled LiNbO₃ waveguide,"
T. Kobayashi, D. Akamatsu, Y. Nishida, T. Tanabe, M. Yasuda, F.-L. Hong, and K. Hosaka,
Opt. Express 24, 12142 (2016).

"Absolute frequency measurements and hyperfine structures of the molecular iodine transitions at 578 nm,"
T. Kobayashi, D. Akamatsu, K. Hosaka, H. Inaba, S. Okubo, T. Tanabe, M. Yasuda, A. Onae, and F.-L. Hong,
J. Opt. Soc. Am. B 33(4), 725 (2016).

[2015]
"Improved Frequency Measurement of the ¹S₀-³P₀ Clock Transition in ⁸⁷Sr Using a Cs Fountain Clock as a Transfer Oscillator,"
T. Tanabe, D. Akamatsu, T. Kobayashi, A. Takamizawa, S. Yanagimachi, T. Ikegami, T. Suzuyama, H. Inaba, S. Okubo, M. Yasuda, F.-L. Hong, A. Onae, and K. Hosaka,
J. Phys. Soc. Jpn. 84, 115002 (2015).

"All-optically stabilized frequency comb,"
S. Okubo, K. Gunji, A. Onae, M. Schramm, K. Nakamura, F.-L. Hong, T. Hattori, K. Hosaka, and H. Inaba,
Appl. Phys. Express 8, 122701 (2015).

"Novel phase-locking schemes for the carrier envelope offset frequency of an optical frequency comb,"
S. Okubo, A. Onae, K. Hosaka, H. Sera, H. Inaba, and F.-L. Hong,
Appl. Phys. Express 8, 112402 (2015).

"Ultra-broadband dual-comb spectroscopy across 1.0-1.9 μm,"
S. Okubo, K. Iwakuni, H. Inaba, K. Hosaka, A. Onae, H. Sasada, and F.-L. Hong,
Appl. Phys. Express 8, 082402 (2015).

"Compact iodine-stabilized laser operating at 531 nm with stability at the 10^-12 level and using a coin-sized laser module,"
T. Kobayashi, D. Akamatsu, K. Hosaka, H. Inaba, S. Okubo, T. Tanabe, M. Yasuda, A. Onae, and F.-L. Hong,
Opt. Express 23, 20749-20759 (2015).

[2014]
"Study on a precise frequency comparison system using an optical carrier,"
M. Wada, K. Watabe, S. Okubo, T. Suzuyama, F.-L. Hong, and M. Amemiya,
IEEJ Trans. EIS 134, 526 (2014) [In Japanese].

"Spectroscopy and frequency measurement of the ⁸⁷Sr clock transition by laser linewidth transfer using an optical frequency comb,"
D. Akamatsu, H. Inaba, K. Hosaka, M. Yasuda, A. Onae, T. Suzuyama, M. Amemiya, and F.-L. Hong,
Appl. Phys. Express 7, 012401 (2014).

"Frequency ratio measurement of ¹⁷¹Yb and ⁸⁷Sr optical lattice clocks,"
D. Akamatsu, M. Yasuda, H. Inaba, K. Hosaka, T. Tanabe, A. Onae, and F.-L. Hong,
Opt. Express 22, 7898-7905 (2014).

[2013]
"Spectroscopy of ¹⁷¹Yb in an optical lattice based on laser linewidth transfer using a narrow linewidth frequency comb,"
H. Inaba, K. Hosaka, M. Yasuda, Y. Nakajima, K. Iwakuni, D. Akamatsu, S. Okubo, T. Kohno, A. Onae, and F.-L. Hong,
Opt. Express 21, 7891-7896 (2013).

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