Keisuke Fujii

8.3k total citations · 2 hit papers
234 papers, 4.9k citations indexed

About

Keisuke Fujii is a scholar working on Artificial Intelligence, Atomic and Molecular Physics, and Optics and Electrical and Electronic Engineering. According to data from OpenAlex, Keisuke Fujii has authored 234 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 92 papers in Artificial Intelligence, 78 papers in Atomic and Molecular Physics, and Optics and 54 papers in Electrical and Electronic Engineering. Recurrent topics in Keisuke Fujii's work include Quantum Computing Algorithms and Architecture (83 papers), Quantum Information and Cryptography (75 papers) and Magnetic confinement fusion research (28 papers). Keisuke Fujii is often cited by papers focused on Quantum Computing Algorithms and Architecture (83 papers), Quantum Information and Cryptography (75 papers) and Magnetic confinement fusion research (28 papers). Keisuke Fujii collaborates with scholars based in Japan, United States and Russia. Keisuke Fujii's co-authors include Kosuke Mitarai, Masahiro Kitagawa, Makoto Negoro, Tomoyuki Morimae, Yukio Tamura, Katsuji Yamamoto, H. Tamura, Hidehiro Sakurai, Hiroshi Watanabe and Yuuki Tokunaga and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Physical Review Letters and Nature Communications.

In The Last Decade

Keisuke Fujii

221 papers receiving 4.7k citations

Hit Papers

Quantum circuit learning 2018 2026 2020 2023 2018 2021 250 500 750
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.

  1. Quantum circuit learning
    2018 860 citations Kosuke Mitarai, Makoto Negoro et al. profile →
  2. Qulacs: a fast and versatile quantum circuit simulator for research purpose
    2021 187 citations Yasunari Suzuki, Ken Nakanishi et al. profile →

Peers

Keisuke Fujii
Akira Hirose Japan
Ivan Oseledets Russia
Vivek K Goyal United States
Boaz Nadler Israel
John Hertz Denmark
Charles M. Rader United States
David Bau United States
Ming Gu United States
Daniela Calvetti United States
A. Gersho United States
Akira Hirose Japan
Keisuke Fujii
Citations per year, relative to Keisuke Fujii Keisuke Fujii (= 1×) peers Akira Hirose

Countries citing papers authored by Keisuke Fujii

Since Specialization
Citations

This map shows the geographic impact of Keisuke Fujii'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 Keisuke Fujii with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keisuke Fujii more than expected).

Fields of papers citing papers by Keisuke Fujii

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keisuke Fujii. 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 Keisuke Fujii. The network helps show where Keisuke Fujii may publish in the future.

Co-authorship network of co-authors of Keisuke Fujii

This figure shows the co-authorship network connecting the top 25 collaborators of Keisuke Fujii. A scholar is included among the top collaborators of Keisuke Fujii 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 Keisuke Fujii. Keisuke Fujii is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Fujii, Keisuke, Masahiro Hasuo, M. Goto, & J. Lore. (2025). A scaling law of the neutral penetration length and Balmer-α wing shape in high-temperature plasmas*. Nuclear Fusion. 65(6). 66014–66014.
2.
Hakoshima, Hideaki, et al.. (2024). Markov-chain Monte Carlo method enhanced by a quantum alternating operator ansatz. Physical Review Research. 6(3). 6 indexed citations
3.
4.
Mitarai, Kosuke, et al.. (2024). Experimental demonstration of a high-fidelity virtual two-qubit gate. Physical Review Research. 6(1). 8 indexed citations
5.
Fujii, Keisuke, K. Sawada, M. Goto, et al.. (2024). Experimental validation of a collision-radiation dataset for molecular hydrogen in plasmas. Physics of Plasmas. 31(9). 1 indexed citations
6.
Mitarai, Kosuke, et al.. (2024). Continuous optimization by quantum adaptive distribution search. Physical Review Research. 6(2). 1 indexed citations
7.
Kajita, Shin, et al.. (2023). Application of machine learning for optical emission spectroscopy data in NAGDIS-II. Fusion Engineering and Design. 196. 114012–114012. 3 indexed citations
8.
Mizukami, Wataru, et al.. (2023). Universal noise-precision relations in variational quantum algorithms. Physical Review Research. 5(2). 3 indexed citations
9.
Nakanishi, Ken, Kosuke Mitarai, Zhiguang Yan, et al.. (2023). Subspace variational quantum simulator. Physical Review Research. 5(2). 17 indexed citations
10.
Mitarai, Kosuke, et al.. (2022). Constructing Local Bases for a Deep Variational Quantum Eigensolver for Molecular Systems. Physical Review Applied. 18(6). 1 indexed citations
11.
12.
Mitarai, Kosuke, et al.. (2022). Quantifying fermionic nonlinearity of quantum circuits. Physical Review Research. 4(4). 7 indexed citations
13.
Fujii, Keisuke, et al.. (2021). Comparative Study of Sampling-Based Simulation Costs of Noisy Quantum Circuits. Physical Review Applied. 15(6). 3 indexed citations
14.
Maeyama, S., M. Sasaki, Keisuke Fujii, et al.. (2021). On the triad transfer analysis of plasma turbulence: symmetrization, coarse graining, and directional representation. New Journal of Physics. 23(4). 43049–43049. 6 indexed citations
15.
Fujii, Keisuke, S. Maeyama, X. Garbet, et al.. (2021). Compressing the time series of five dimensional distribution function data from gyrokinetic simulation using principal component analysis. Physics of Plasmas. 28(1). 5 indexed citations
16.
Mitarai, Kosuke, et al.. (2021). Experimental quantum kernel trick with nuclear spins in a solid. npj Quantum Information. 7(1). 35 indexed citations
17.
Mitarai, Kosuke & Keisuke Fujii. (2020). Constructing a virtual two-qubit gate by sampling single-qubit operations. New Journal of Physics. 23(2). 23021–23021. 57 indexed citations
18.
Fujii, Keisuke & Tomoyuki Morimae. (2017). Commuting quantum circuits and complexity of Ising partition functions. Kyoto University Research Information Repository (Kyoto University). 27 indexed citations
19.
Kajita, Shin, Mitsutoshi Aramaki, H. van der Meiden, et al.. (2017). Behavior of 23S metastable state He atoms in low-temperature recombining plasmas. Physics of Plasmas. 24(7). 21 indexed citations
20.
Fujii, Keisuke, Kazunori Mitsuo, Hideyuki Tanno, et al.. (2013). Estimation of Aero- and Aerothermo-Dynamic Characteristics for HTV-R. 27(2). 1 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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