Koji Azuma

2.7k total citations · 2 hit papers
53 papers, 1.6k citations indexed

About

Koji Azuma is a scholar working on Artificial Intelligence, Atomic and Molecular Physics, and Optics and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Koji Azuma has authored 53 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Artificial Intelligence, 22 papers in Atomic and Molecular Physics, and Optics and 12 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Koji Azuma's work include Quantum Information and Cryptography (23 papers), Quantum Computing Algorithms and Architecture (18 papers) and Quantum Mechanics and Applications (18 papers). Koji Azuma is often cited by papers focused on Quantum Information and Cryptography (23 papers), Quantum Computing Algorithms and Architecture (18 papers) and Quantum Mechanics and Applications (18 papers). Koji Azuma collaborates with scholars based in Japan, Canada and Spain. Koji Azuma's co-authors include Kiyoshi Tamaki, Hoi-Kwong Lo, William J. Munro, Marcos Curty, Hoi‐Kwong Lo, Kae Nemoto, Go Kato, David Elkouss, Liang Jiang and Ilan Tzitrin and has published in prestigious journals such as Physical Review Letters, Nature Communications and Reviews of Modern Physics.

In The Last Decade

Koji Azuma

46 papers receiving 1.6k citations

Hit Papers

align trajectories

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.

All-photonic quantum repeaters

2015 336 citations Koji Azuma, Kiyoshi Tamaki et al. Nature Communications profile →
Quantum repeaters: From quantum networks to the quantum internet

2023 220 citations Koji Azuma, Sophia E. Economou et al. Reviews of Modern Physics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koji Azuma Japan	19	1.2k	1.1k	168	90	75	53	1.6k
Hongrong Li China	21	565 0.5×	844 0.8×	232 1.4×	83 0.9×	204 2.7×	109	1.5k
Zhihai Wang China	21	576 0.5×	931 0.8×	297 1.8×	46 0.5×	106 1.4×	102	1.3k
Liujun Wang China	14	668 0.5×	574 0.5×	124 0.7×	36 0.4×	206 2.7×	25	1.1k
Xiaodong Yang China	16	502 0.4×	797 0.7×	443 2.6×	228 2.5×	38 0.5×	60	1.2k
Tian-Yu Ye China	28	1.4k 1.1×	1.3k 1.2×	40 0.2×	187 2.1×	92 1.2×	96	1.8k
Fang‐Fang Du China	21	849 0.7×	758 0.7×	114 0.7×	26 0.3×	97 1.3×	63	1.1k
Shiyu Wang China	14	411 0.3×	337 0.3×	79 0.5×	22 0.2×	100 1.3×	29	680
Zixuan Hu United States	11	381 0.3×	475 0.4×	95 0.6×	82 0.9×	53 0.7×	42	764
C. Matthias Germany	13	365 0.3×	124 0.1×	38 0.2×	31 0.3×	152 2.0×	49	763
Shi‐Xin Zhang China	17	338 0.3×	310 0.3×	19 0.1×	41 0.5×	399 5.3×	60	1.1k

Countries citing papers authored by Koji Azuma

Since Specialization

Citations

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

Fields of papers citing papers by Koji Azuma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Azuma

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Matsumoto, Kinnosuke, Akihiro Tamiya, Motohiro Tamiya, et al.. (2025). Timing of first pembrolizumab infusion and long-term outcomes in non-small cell lung cancer: A retrospective multicenter study. European Journal of Cancer. 228. 115748–115748.

Azuma, Koji. (2025). Networking quantum networks with minimum cost aggregation. npj Quantum Information. 11(1).

Azuma, Koji, et al.. (2025). Do Black Holes Store Negative Entropy?. Progress of Theoretical and Experimental Physics. 2025(5).

Azuma, Koji. (2024). Developing a Theory for a Quantum Internet for Global Quantum Communication. NTT technical review. 22(10). 13–18.

Azuma, Koji, et al.. (2024). Organizing Pneumonia With Diffuse Alveolar Hemorrhage Induced by the Kampo Medicine Choreito. Journal of Medical Cases. 15(7). 120–125.

Azuma, Koji, Sophia E. Economou, David Elkouss, et al.. (2023). Quantum repeaters: From quantum networks to the quantum internet. Reviews of Modern Physics. 95(4). 220 indexed citations breakdown →

Ikuta, Takuya, et al.. (2023). Generation of a time–bin Greenberger–Horne–Zeilinger state with an optical switch. Quantum Science and Technology. 8(3). 35003–35003. 6 indexed citations

Curty, Marcos, Koji Azuma, & Hoi-Kwong Lo. (2022). Simple security proof of twin-field type quantum key distribution protocol. Investigo Institutional repository of UVigo (Universidade de Vigo). 98 indexed citations

Azuma, Koji, Takayuki Takimoto, Takahiko Kasai, et al.. (2021). Diagnostic yield and safety of bronchofiberscopy for pulmonary alveolar proteinosis. Respiratory Investigation. 59(6). 757–765. 7 indexed citations

10.

Enomoto, Takatoshi, Yoshinobu Matsuda, Yuichi Adachi, et al.. (2021). Limitations of End-Tidal CO2 Measured with a Portable Capnometer to Estimate PaCO2 for Patients with Respiratory Disease. Turkish Thoracic Journal. 22(3). 212–216. 3 indexed citations

11.

Enomoto, Takatoshi, Akihiro Tamiya, Kinnosuke Matsumoto, et al.. (2020). Nivolumab treatment beyond progressive disease in advanced non-small cell lung cancer. Clinical & Translational Oncology. 23(3). 582–590. 11 indexed citations

12.

Azuma, Koji, Akihiro Mizutani, & Hoi-Kwong Lo. (2016). Fundamental rate-loss trade-off for the quantum internet. Nature Communications. 7(1). 13523–13523. 53 indexed citations

13.

Azuma, Koji, Kiyoshi Tamaki, & Hoi-Kwong Lo. (2015). All-photonic quantum repeaters. Nature Communications. 6(1). 6787–6787. 336 indexed citations breakdown →

14.

Namiki, Ryo & Koji Azuma. (2015). Quantum Benchmark via an Uncertainty Product of Canonical Variables. Physical Review Letters. 114(14). 140503–140503. 4 indexed citations

15.

Tanji, Nozomu, Noriyoshi Miura, Tetsuya Fukumoto, et al.. (2013). Modified FOLFOX6 Chemotherapy in Patients with Metastatic Urachal Cancer. Chemotherapy. 59(6). 402–406. 37 indexed citations

16.

Sasaki, Toyokazu, Koh‐ichi Nakashiro, Hiroshi Tanaka, et al.. (2010). Knockdown of Akt isoforms by RNA silencing suppresses the growth of human prostate cancer cells in vitro and in vivo. Biochemical and Biophysical Research Communications. 399(1). 79–83. 33 indexed citations

17.

Azuma, Koji, Koh‐ichi Nakashiro, Toyokazu Sasaki, et al.. (2009). Anti-tumor effect of small interfering RNA targeting the androgen receptor in human androgen-independent prostate cancer cells. Biochemical and Biophysical Research Communications. 391(1). 1075–1079. 21 indexed citations

18.

Kunizaki, Masaki, Hiroyuki Kusano, Koji Azuma, et al.. (2009). Cholecystitis caused by a fish bone. The American Journal of Surgery. 198(2). e20–e22. 8 indexed citations

19.

Hashine, Katsuyoshi, et al.. (2005). HEALTH-RELATED QUALITY OF LIFE AFTER RADICAL PROSTATECTOMY OR RADIOTHERAPY. The Japanese Journal of Urology. 96(4). 495–502. 2 indexed citations

20.

Kagiya, Tsutomu, et al.. (1964). A High Polymerization of Ethylene with Zirconium Phosphate-AlEts Catalyst. The Journal of the Society of Chemical Industry Japan. 67(1). 261–264. 2 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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