Kensuke Matsubara

Physics and Astronomy · Physical Sciences

11h-index350citations46works0.02yr avg
OpenAlex↗Google Scholar↗

Accepting Students?

No reports yet. Know if this professor is taking students?

Research Topics

Advanced Frequency and Time Standards(30), Advanced Fiber Laser Technologies(21), Atomic and Subatomic Physics Research(16), Cold Atom Physics and Bose-Einstein Condensates(14), Scientific Measurement and Uncertainty Evaluation(14)

Publications46 total

Generation of real-time integrated timescale using atomic clocks at remote stations in NICT
2025Open Access
Long-term contribution of an optical lattice clock to the steering UTC(NICT)
2023Open Access
Frequency ratio of an <sup>115</sup>In<sup>+</sup> ion clock and a <sup>87</sup>Sr optical lattice clock
Optics Letters·2020· 20 citedOpen Access
Optical clock based on a sympathetically-cooled indium ion
Hyperfine Interactions·2019· 6 cited
Update of the CIPM recommended frequency of the In + clock transition
The Japan Society of Applied Physics·2018
Updated absolute frequency of the <sup>115</sup>In<sup>+</sup> optical clock transition
2017
Frequency measurement of the clock transition of an indium ion sympathetically-cooled in a linear trap
Optics Express·2017· 20 citedOpen Access
Progress toward a new implementation of an In<sup>+</sup>optical clock
2016
Laser Sources for an In + Ion Optical Frequency Standard
The Japan Society of Applied Physics·2016
Development of an indium ion optical frequency standard
2014
Direct frequency comparison between a single Ca&lt;sup&gt;&amp;#x002B;&lt;/sup&gt; clock and a Sr lattice clock
2013
Developments of optical clocks and their comparisons for future time reference
IAUJD·2012
Improved measurement of the<sup>40</sup>Ca<sup>+</sup>clock transition frequency towards an uncertainty of 10<sup>−15</sup>level
2011
Developments of optical frequency standards at NICT and all-optical comparison against a remote clock in University of Tokyo using 60km fiber link
2011
Improvement in accuracy of a single<sup>40</sup>Ca<sup>+</sup>optical clock towards the 10<sup>−15</sup>level using a magnetic shield
2011
Development of an Ultra-Narrow Line-Width Clock Laser for Optical Frequency Standards
The Review of Laser Engineering·2011Open Access
A clock laser with high frequency stability and highly precise transfer
2010
An Optical Frequency Standard with Single 40Ca+ Ions
The Review of Laser Engineering·2010Open Access
Absolute frequency measurement of the &lt;sup&gt;40&lt;/sup&gt;Ca&lt;sup&gt;+&lt;/sup&gt; clock transition using a LD-based clock laser and UTC(NICT)
2009· 2 cited
Stable Operation of Femtosecond Laser Frequency Combs with Uncertainty at the 10<sup>-17</sup> Level toward Optical Frequency Standards
Japanese Journal of Applied Physics·2009· 19 cited
page 1 of 3Next →

Frequent Co-authors

Kazuhiro Hayasaka(21), Mizuhiko Hosokawa(20), Shigeo Nagano(18), Hiroyuki Ito(16), T. Ido(13), Masatoshi Kajita(12), Ying Li(10), Nozomi Ohtsubo(10), Shinji Urabe(9), Masayoshi Watanabe(8), Ying Li(7), Yuko Hanado(7), Ying Li(6), Hidekazu Hachisu(6), Reiko Kojima(6), Hajime Katô(4), U. Tanaka(4), Hidetsuka Imajo(4), Yasuhiro Koyama(4), Masaaki Baba(3)