Ryuji Ukai

1.2k total citations · 1 hit paper
17 papers, 840 citations indexed

About

Ryuji Ukai is a scholar working on Artificial Intelligence, Atomic and Molecular Physics, and Optics and Media Technology. According to data from OpenAlex, Ryuji Ukai has authored 17 papers receiving a total of 840 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Artificial Intelligence, 10 papers in Atomic and Molecular Physics, and Optics and 2 papers in Media Technology. Recurrent topics in Ryuji Ukai's work include Quantum Information and Cryptography (13 papers), Quantum Mechanics and Applications (7 papers) and Quantum Computing Algorithms and Architecture (5 papers). Ryuji Ukai is often cited by papers focused on Quantum Information and Cryptography (13 papers), Quantum Mechanics and Applications (7 papers) and Quantum Computing Algorithms and Architecture (5 papers). Ryuji Ukai collaborates with scholars based in Japan, Germany and Australia. Ryuji Ukai's co-authors include Akira Furusawa, Peter van Loock, Jun–ichi Yoshikawa, Seiji Armstrong, Shota Yokoyama, Mitsuyoshi Yukawa, Nicolas C. Menicucci, Hidehiro Yonezawa, Shigenari Suzuki and Alberto Politi and has published in prestigious journals such as Physical Review Letters, Nature Photonics and Physical Review A.

In The Last Decade

Ryuji Ukai

15 papers receiving 790 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.

Ultra-large-scale continuous-variable cluster states multiplexed in the time domain

2013 347 citations Shota Yokoyama, Ryuji Ukai et al. Nature Photonics profile →

Peers

Ryuji Ukai

AI

AMPO

EEE

SNP

BE

Xueshi Guo China

Warit Asavanant Japan

Konrad Kieling United Kingdom

Yuan Liang Lim Singapore

Liu‐Yong Cheng China

Bao‐Cang Ren China

Pei Zeng China

Shigenari Suzuki Japan

Yuuki Tokunaga Japan

Linshu Li United States

Xueshi Guo China

Ryuji Ukai

435 ×0.6

AI

418 ×0.6

AMPO

190 ×1.3

EEE

4 ×0.5

SNP

9 ×1.1

BE

Citations per year, relative to Ryuji Ukai Ryuji Ukai (= 1×) peers Xueshi Guo

Countries citing papers authored by Ryuji Ukai

Since Specialization

Citations

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

Fields of papers citing papers by Ryuji Ukai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuji Ukai

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

All Works

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17 of 17 papers shown

1.

Ukai, Ryuji, Chihiro Yoshimura, & Hiroyuki Mizuno. (2023). Quantum Computer Architecture for Quantum Error Correction with Distributing Process to Multiple Temperature Layers. 196–202.

2.

Ukai, Ryuji, et al.. (2022). Two-Dimensional Beam Splitter Array Waveguide for High Luminance and Large Eye-Box Head Mounted Display. 1–2.

3.

Ukai, Ryuji, et al.. (2020). High luminance and high see‐through head‐mounted displays with beam‐splitter‐array waveguides. Journal of the Society for Information Display. 29(1). 78–88. 6 indexed citations

4.

Yokoyama, Shota, Ryuji Ukai, Seiji Armstrong, et al.. (2015). Demonstration of a fully tunable entangling gate for continuous-variable one-way quantum computation. Physical Review A. 92(3). 12 indexed citations

5.

Alexander, Rafael N., Seiji Armstrong, Ryuji Ukai, & Nicolas C. Menicucci. (2014). Noise analysis of single-mode Gaussian operations using continuous-variable cluster states. Physical Review A. 90(6). 37 indexed citations

6.

Yokoyama, Shota, Ryuji Ukai, Jun–ichi Yoshikawa, et al.. (2014). Nonlocal quantum gate on quantum continuous variables with minimal resources. Physical Review A. 90(1). 15 indexed citations

7.

Ukai, Ryuji. (2014). Multi-Step Multi-Input One-Way Quantum Information Processing with Spatial and Temporal Modes of Light. Springer theses. 11 indexed citations

8.

Yokoyama, Shota, Ryuji Ukai, Seiji Armstrong, et al.. (2013). Ultra-large-scale continuous-variable cluster states multiplexed in the time domain. Nature Photonics. 7(12). 982–986. 347 indexed citations breakdown →

9.

Ukai, Ryuji, Seiji Armstrong, Alberto Politi, et al.. (2011). Demonstration of Unconditional One-Way Quantum Computations for Continuous Variables. Physical Review Letters. 106(24). 240504–240504. 105 indexed citations

10.

Ukai, Ryuji, Shota Yokoyama, Jun–ichi Yoshikawa, Peter van Loock, & Akira Furusawa. (2011). Demonstration of a Controlled-Phase Gate for Continuous-Variable One-Way Quantum Computation. Physical Review Letters. 107(25). 250501–250501. 51 indexed citations

11.

Miwa, Yoshichika, Ryuji Ukai, Jun–ichi Yoshikawa, et al.. (2010). Demonstration of cluster-state shaping and quantum erasure for continuous variables. Physical Review A. 82(3). 17 indexed citations

12.

Ukai, Ryuji, et al.. (2010). Universal linear Bogoliubov transformations through one-way quantum computation. Physical Review A. 81(3). 44 indexed citations

13.

Ukai, Ryuji, Mitsuyoshi Yukawa, Seiji Armstrong, et al.. (2009). Generation of Four-Mode Continuous-Variable Cluster States. AIP conference proceedings. 137–140. 8 indexed citations

14.

Armstrong, Seiji, Mitsuyoshi Yukawa, Ryuji Ukai, et al.. (2008). Experimental generation of four-mode continuous-variable cluster states. 225–226. 16 indexed citations

15.

Yukawa, Mitsuyoshi, Ryuji Ukai, Peter van Loock, & Akira Furusawa. (2008). Experimental generation of four-mode continuous-variable cluster states. Physical Review A. 78(1). 161 indexed citations

16.

Nakano, Hiroshi, et al.. (1988). [Clinical effects of terodiline hydrochloride for urinary frequency and sense of residual urine].. PubMed. 34(4). 733–8. 2 indexed citations

17.

Toki, Naotika, et al.. (1980). Further purification and some properties of human urinary trypsin inhibitor.. PubMed. 17(6). 465–9. 8 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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