Masao Takamoto

5.1k total citations · 3 hit papers
40 papers, 3.4k citations indexed

About

Masao Takamoto is a scholar working on Atomic and Molecular Physics, and Optics, Surgery and Spectroscopy. According to data from OpenAlex, Masao Takamoto has authored 40 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 39 papers in Atomic and Molecular Physics, and Optics, 6 papers in Surgery and 2 papers in Spectroscopy. Recurrent topics in Masao Takamoto's work include Advanced Frequency and Time Standards (37 papers), Cold Atom Physics and Bose-Einstein Condensates (28 papers) and Atomic and Subatomic Physics Research (24 papers). Masao Takamoto is often cited by papers focused on Advanced Frequency and Time Standards (37 papers), Cold Atom Physics and Bose-Einstein Condensates (28 papers) and Atomic and Subatomic Physics Research (24 papers). Masao Takamoto collaborates with scholars based in Japan, Russia and France. Masao Takamoto's co-authors include Hidetoshi Katori, Ichiro Ushijima, Feng-Lei Hong, Ryoichi Higashi, V. G. Pal’chikov, V D Ovsiannikov, Takuya Ohkubo, Manoj Das, Noriaki Ohmae and Tomoya Akatsuka and has published in prestigious journals such as Nature, Physical Review Letters and Applied Physics Letters.

In The Last Decade

Masao Takamoto

39 papers receiving 3.2k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

An optical lattice clock

2005 579 citations Masao Takamoto, Feng-Lei Hong et al. Nature profile →
Cryogenic optical lattice clocks

2015 416 citations Ichiro Ushijima, Masao Takamoto et al. Nature Photonics profile →
Test of general relativity by a pair of transportable optical lattice clocks

2020 283 citations Masao Takamoto, Ichiro Ushijima et al. Nature Photonics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Masao Takamoto Japan	24	3.3k	318	298	195	175	40	3.4k
Christian Lisdat Germany	29	2.1k 0.6×	176 0.6×	169 0.6×	206 1.1×	107 0.6×	74	2.2k
B. Lipphardt Germany	25	2.5k 0.8×	488 1.5×	388 1.3×	234 1.2×	113 0.6×	74	2.7k
S. Weyers Germany	23	2.0k 0.6×	165 0.5×	487 1.6×	122 0.6×	98 0.6×	54	2.2k
Thomas P. Heavner United States	20	1.9k 0.6×	204 0.6×	385 1.3×	163 0.8×	86 0.5×	81	2.1k
X. Zhang United States	15	2.1k 0.6×	176 0.6×	130 0.4×	93 0.5×	79 0.5×	20	2.2k
M. Schioppo Italy	13	1.6k 0.5×	217 0.7×	132 0.4×	83 0.4×	74 0.4×	24	1.8k
Daniele Rovera France	23	2.0k 0.6×	288 0.9×	382 1.3×	282 1.4×	67 0.4×	106	2.2k
Travis Nicholson United States	11	1.9k 0.6×	161 0.5×	118 0.4×	122 0.6×	66 0.4×	17	2.0k
Thomas Legero Germany	20	2.8k 0.8×	664 2.1×	145 0.5×	169 0.9×	46 0.3×	44	2.9k
Sebastian Blatt United States	21	2.5k 0.7×	204 0.6×	148 0.5×	159 0.8×	94 0.5×	37	2.6k

Countries citing papers authored by Masao Takamoto

Since Specialization

Citations

This map shows the geographic impact of Masao Takamoto's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masao Takamoto with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masao Takamoto more than expected).

Fields of papers citing papers by Masao Takamoto

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masao Takamoto. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masao Takamoto. The network helps show where Masao Takamoto may publish in the future.

Co-authorship network of co-authors of Masao Takamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Masao Takamoto. A scholar is included among the top collaborators of Masao Takamoto based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Masao Takamoto. Masao Takamoto is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ohmae, Noriaki, Masao Takamoto, Yosuke Takahashi, et al.. (2021). Transportable Strontium Optical Lattice Clocks Operated Outside Laboratory at the Level of 10 ⁻¹⁸ Uncertainty. Advanced Quantum Technologies. 4(8). 51 indexed citations

Akatsuka, Tomoya, et al.. (2021). Three-stage laser cooling of Sr atoms using the 5s5pP23 metastable state below Doppler temperatures. Physical review. A. 103(2). 12 indexed citations

Takamoto, Masao, Ichiro Ushijima, Noriaki Ohmae, et al.. (2020). Test of general relativity by a pair of transportable optical lattice clocks. Nature Photonics. 14(7). 411–415. 283 indexed citations breakdown →

Akatsuka, Tomoya, Takashi Goh, Katsuya Oguri, et al.. (2020). Optical frequency distribution using laser repeater stations with planar lightwave circuits. Optics Express. 28(7). 9186–9186. 24 indexed citations

Akatsuka, Tomoya, et al.. (2019). Frequency measurement on the 5s5p P23−5s4d D33 transition of Sr88 atoms using the photon-momentum-transfer technique. Physical review. A. 100(4). 5 indexed citations

Ushijima, Ichiro, Masao Takamoto, & Hidetoshi Katori. (2018). Operational Magic Intensity for Sr Optical Lattice Clocks. Physical Review Letters. 121(26). 263202–263202. 74 indexed citations

Yamanaka, K., Noriaki Ohmae, Ichiro Ushijima, Masao Takamoto, & Hidetoshi Katori. (2015). Frequency Ratio ofHg199andSr87Optical Lattice Clocks beyond the SI Limit. Physical Review Letters. 114(23). 230801–230801. 64 indexed citations

Hachisu, Hidekazu, Atsushi Yamaguchi, Miho Fujieda, et al.. (2011). Optical direct comparison of⁸⁷Sr optical lattice clocks using a >50 km telecommunication fiber link. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8132. 81320A–81320A.

Takamoto, Masao, T. Takano, & Hidetoshi Katori. (2011). Frequency comparison of optical lattice clocks beyond the Dick limit. Nature Photonics. 5(5). 288–292. 93 indexed citations

10.

Takamoto, Masao, Hidetoshi Katori, S. I. Marmo, V D Ovsiannikov, & V. G. Pal’chikov. (2009). Prospects for Optical Clocks with a Blue-Detuned Lattice. Physical Review Letters. 102(6). 63002–63002. 60 indexed citations

11.

Hong, Feng-Lei, M. Musha, Masao Takamoto, et al.. (2009). Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer. Optics Letters. 34(5). 692–692. 60 indexed citations

12.

Akatsuka, Tomoya, Masao Takamoto, & Hidetoshi Katori. (2008). Optical lattice clocks with non-interacting bosons and fermions. Nature Physics. 4(12). 954–959. 95 indexed citations

13.

Blatt, Sebastian, Andrew D. Ludlow, Gretchen K. Campbell, et al.. (2008). New Limits on Coupling of Fundamental Constants to Gravity UsingSr87Optical Lattice Clocks. Physical Review Letters. 100(14). 140801–140801. 196 indexed citations

14.

Katori, Hidetoshi, Masao Takamoto, & Tomoya Akatsuka. (2008). Optical Lattice Clocks with Non-Interacting Bosons and Fermions. The Review of Laser Engineering. 36(APLS). 1004–1007. 5 indexed citations

15.

Hachisu, Hidekazu, S. G. Porsev, Andrei Derevianko, et al.. (2008). Trapping of Neutral Mercury Atoms and Prospects for Optical Lattice Clocks. Physical Review Letters. 100(5). 53001–53001. 127 indexed citations

16.

Тайченачев, А. В., et al.. (2007). Magic-wave-inducedS01−P03transition in even isotopes of alkaline-earth-metal-like atoms. Physical Review A. 75(2). 31 indexed citations

17.

Takamoto, Masao, Feng-Lei Hong, Ryoichi Higashi, & Hidetoshi Katori. (2005). An optical lattice clock. Nature. 435(7040). 321–324. 579 indexed citations breakdown →

18.

Katori, Hidetoshi, Masao Takamoto, V. G. Pal’chikov, & V D Ovsiannikov. (2003). Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap. arXiv (Cornell University). 384 indexed citations

19.

Katori, Hidetoshi, et al.. (2003). Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap. Physical Review Letters. 91(17). 173005–173005. 20 indexed citations

20.

Takamoto, Masao & Hidetoshi Katori. (2003). Spectroscopy of theS01−P03Clock Transition ofSr87in an Optical Lattice. Physical Review Letters. 91(22). 223001–223001. 122 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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