International Activities

Invited Papers

  • Shota Nagayama, Toshihiko Sasaki, and Akihito Soeda. “Backcasting Perspectives on Services of Future Quantum Internet.” 2024 IEEE International Conference on Quantum Software (QSW), Shenzhen, China, 2024, pp. 12–18. doi: 10.1109/QSW62656.2024.00015.

Invited Talks

  • Shota Nagayama. “Quantum Network Systems and Testbed Efforts in Japan.” The 4th Workshop on Quantum Repeaters and Networks, Sep. 2024.
  • Shota Nagayama. “Backcasting Perspectives on Services of Future Quantum Internet.” IEEE Symposium on Quantum Software: Towards Quantum Utility in the NISQ Era (QSWUtil), Jul. 2024.

RFCs (Internet Requests For Comments)

  • Wojciech Kozlowski, Stephanie Wehner, Rodney Van Meter, Bruno Rijsman, Angela Sara Cacciapuoti, Marcello Caleffi, and Shota Nagayama. “RFC 9340: Architectural Principles for a Quantum Internet.” RFC Editor, Mar. 2023. RFC 9340.

Journal Papers

  • Rei Kawano, Shin Nishio, Hideaki Kawaguchi, Shota Nagayama, and Takahiko Satoh. “RuleSet Generation Framework for Application Layer Integration in Quantum Internet.” IEEE Transactions on Quantum Engineering, Early Access, Aug. 2026. link.
  • Kohei Fujiu, Shota Nagayama, Shin Nishio, Hideaki Kawaguchi, and Takahiko Satoh. “Dense Packing of the Surface Code: Code Deformation Procedures and Hook-Error-Avoiding Gate Scheduling.” Physical Review A, vol. 113, Art. no. 042412, Apr. 2026. link.
  • Fumiyoshi Kobayashi and Shota Nagayama. “Erasure-Tolerance Scheme for the Surface Codes on Neutral Atom Quantum Computers.” IEEE Transactions on Quantum Engineering, vol. 7, Art. no. 3100213, 2026. doi: 10.1109/TQE.2025.3627918.
  • Takahiko Satoh, Shota Nagayama, Shigeya Suzuki, Takaaki Matsuo, and Rodney Van Meter. “Attacking the Quantum Internet.” IEEE Transactions on Quantum Engineering, vol. 2, Art. no. 4102617, Jul. 2021. link.
  • Kenji Kubo, Yuya Nakagawa, Suguru Endo, and Shota Nagayama. “Variational Quantum Simulations of Stochastic Differential Equations.” Physical Review A, vol. 103, no. 5, Art. no. 052425, May 2021. link.
  • Takaaki Matsuo, Takahiko Satoh, Shota Nagayama, and Rodney Van Meter. “Analysis of Measurement-Based Quantum Network Coding over Repeater Networks under Noisy Conditions.” Physical Review A, vol. 97, Art. no. 062328, Jun. 2018. link.
  • Takahiko Satoh, Shota Nagayama, and Rodney Van Meter. “The Network Impact of Hijacking a Quantum Repeater.” Quantum Science and Technology, vol. 3, no. 3, Art. no. 034008, May 2018. link.
  • Shota Nagayama, A. G. Fowler, D. Horsman, S. J. Devitt, and R. Van Meter. “Surface Code Error Correction on a Defective Lattice.” New Journal of Physics, vol. 19, no. 2, Art. no. 023050, 2017. link.
  • Shota Nagayama, T. Satoh, and R. Van Meter. “State Injection, Lattice Surgery, and Dense Packing of the Deformation-Based Surface Code.” Physical Review A, vol. 95, Art. no. 012321, Jan. 2017. link.
  • Shota Nagayama, B.-S. Choi, S. Devitt, S. Suzuki, and R. Van Meter. “Interoperability in Encoded Quantum Repeater Networks.” Physical Review A, vol. 93, Art. no. 042338, Apr. 2016. link.
  • Takahiko Satoh, Kaori Ishizaki, Shota Nagayama, and Rodney Van Meter. “Analysis of Quantum Network Coding for Realistic Repeater Networks.” Physical Review A, vol. 93, Art. no. 032302, Mar. 2016. link.

International Conferences with Proceedings

  • Aman Yacob Tekleab, Yifeng Shen, Yutaro Yoshii, Amin Taherkhani, Rodney Van Meter, and Shota Nagayama. “A Distributed Switching Protocol for Quantum Networks.” 2026 IEEE International Conference on Quantum Computing and Engineering (QCE), Toronto, ON, Canada, Sep. 2026. arXiv:2605.07295.
  • Takafumi Oka, Michal Hajdušek, Shota Nagayama, and Rodney Van Meter. “A Tailored Fidelity Estimation and Purification Method for Bootstrapping a Quantum Network.” 2025 IEEE International Conference on Quantum Computing and Engineering (QCE), Albuquerque, NM, USA, 2025, pp. 1219–1224. doi: 10.1109/QCE65121.2025.00136.
  • Amin Taherkhani, Andrew Todd, Kentaro Teramoto, Rodney Van Meter, and Shota Nagayama. “Automatic Configuration Protocols for Optical Quantum Networks.” 2025 IEEE International Conference on Quantum Computing and Engineering (QCE), Albuquerque, NM, USA, 2025, pp. 1263–1273. doi: 10.1109/QCE65121.2025.00141.
  • Hikaru Yokomori, Marii Koyama, Naphan Benchasattabuse, Michal Hajdušek, Shota Nagayama, and Rodney Van Meter. “Evaluation of Distimation’s Real-World Performance on a Superconducting Quantum Computer.” 2025 IEEE International Conference on Quantum Computing and Engineering (QCE), Albuquerque, NM, USA, 2025, pp. 1043–1051. doi: 10.1109/QCE65121.2025.00116.
  • Yoshihiro Mori, Toshihiko Sasaki, Rikizo Ikuta, Kentaro Teramoto, Hiroyuki Ohno, Michal Hajdusek, Rodney Van Meter, and Shota Nagayama. “Scalable Timing Coordination of Bell State Analyzers in Quantum Networks.” 2024 IEEE International Conference on Quantum Computing and Engineering (QCE), Montreal, QC, Canada, 2024, pp. 1890–1896. doi: 10.1109/QCE60285.2024.00218.
  • Kento Samuel Soon, Naphan Benchasattabuse, Michal Hajdusek, Kentaro Teramoto, Shota Nagayama, and Rodney Van Meter. “Performance of Quantum Networks Using Heterogeneous Link Architectures.” 2024 IEEE International Conference on Quantum Computing and Engineering (QCE), Montreal, QC, Canada, 2024, pp. 1914–1923. doi: 10.1109/QCE60285.2024.00221.
  • Marii Koyama, Claire Yun, Amin Taherkhani, Naphan Benchasattabuse, Bernard Ousmane Sane, Michal Hajdusek, Shota Nagayama, and Rodney Van Meter. “Optimal Switching Networks for Paired-Egress Bell State Analyzer Pools.” 2024 IEEE International Conference on Quantum Computing and Engineering (QCE), Montreal, QC, Canada, 2024, pp. 1897–1907. doi: 10.1109/QCE60285.2024.00219.
  • Kento Samuel Soon, Michal Hajdusek, Shota Nagayama, Naphan Benchasattabuse, Kentaro Teramoto, Ryosuke Satoh, and Rodney Van Meter. “An Implementation and Analysis of a Practical Quantum Link Architecture Utilizing Entangled Photon Sources.” IEEE International Conference on Quantum Communications, Networking, and Computing (QCNC) 2024, Kanazawa, Japan, Jul. 2024, pp. 25–32. doi: 10.1109/QCNC62729.2024.00014.
  • Kentaro Teramoto, Michal Hajdusek, Toshihiko Sasaki, Rodney Van Meter, and Shota Nagayama. “Ruleset-Based Recursive Quantum Internetworking.” Proceedings of the 1st Workshop on Quantum Networks and Distributed Quantum Computing, Sep. 2023, pp. 25–30.
  • Ryosuke Satoh, Michal Hajdusek, Naphan Benchasattabuse, Shota Nagayama, Kentaro Teramoto, Takaaki Matsuo, Sara Ayman Metwalli, Poramet Pathumsoot, Takahiko Satoh, Shigeya Suzuki, et al. “Quisp: A Quantum Internet Simulation Package.” IEEE International Conference on Quantum Computing and Engineering (QCE) 2022, Sep. 2022, pp. 353–364.
  • Rodney Van Meter, Ryosuke Satoh, Naphan Benchasattabuse, Kentaro Teramoto, Takaaki Matsuo, Michal Hajdusek, Takahiko Satoh, Shota Nagayama, and Shigeya Suzuki. “A Quantum Internet Architecture.” IEEE International Conference on Quantum Computing and Engineering (QCE) 2022, Sep. 2022, pp. 341–352.

Panel Discussions

  • “Quantum Network Testbed Work in Japan.” Invited panelist, The 4th Workshop for Quantum Repeater Networks, Sep. 2024.
  • “Quantum Network Testbed Panel Discussion.” Invited panelist, IEEE QCE 2024, Sep. 2024. Abstract.
  • “Young Researcher Session: Big Vision of the Quantum Internet.” Organizer, Quantum Innovation 2022, Nov. 2022.

Workshop/Birds-of-a-Feather Organization

  • Inder Monga, Rodney Van Meter, Shota Nagayama, Akihito Soeda, Joaquin Chung, and Wenji Wu. “Workshop on Quantum Network Engineering.” IEEE QCE 2026, Toronto, ON, Canada, Sep. 2026.
  • Reiko Iwasaki, Takuma Sano, Haruka Shiina, Sho Morishita, Akihito Soeda, and Shota Nagayama. “Connecting the Dots: Technology, People, and Society in the Quantum Era.” IEEE QCNC 2026, Apr. 2026.
  • Inder Monga, Rodney Van Meter, Shota Nagayama, Joaquin Chung, and Wenji Wu. “Workshop on Quantum Network Engineering.” IEEE QCE 2025, Albuquerque, NM, USA, Sep. 2025.
  • Teruo Tanimoto, Yosuke Ueno, Yasunari Suzuki, Shota Nagayama, Akihito Soeda, and Hayata Yamasaki. “Workshop on Fault-Tolerant Quantum Computer System Architecture.” ISCA 25, Jun. 2025.
  • Sho Morishita, Yusuke Nagato, Konomi Higo, Kentaro Teramoto, and Shota Nagayama. “Quantum Quest: Dialogue and Exploration of Quantum Governance Through a Card Game.” IEEE International Conference on Quantum Computing and Engineering (QCE) 2024, Sep. 2024. BoF Abstract.
  • Shota Nagayama, Rodney Van Meter, Wenji Wu, and Inder Monga. “What Makes Quantum Networks? A Quantum Network Protocols’ Perspective: From Physical Layer to Application Layer.” IEEE International Conference on Quantum Computing and Engineering (QCE) 2024, Sep. 2024. BoF Abstract.

Submitted/Preprints/In-Progress Papers

  • Daisuke Sakuma, Amin Taherkhani, Tomoki Tsuno, Toshihiko Sasaki, Hikaru Shimizu, Kentaro Teramoto, Andrew Todd, Yosuke Ueno, Michal Hajdušek, Rikizo Ikuta, Rodney Van Meter, and Shota Nagayama. “An Optical Interconnect for Modular Quantum Computers.” arXiv:2412.09299, 2024. arXiv.
  • Shota Nagayama. “Towards End-to-End Error Management for a Quantum Internet.” arXiv:2112.07185, Dec. 2021. arXiv.
  • Rodney Van Meter, Takahiko Satoh, Shota Nagayama, Takaaki Matsuo, and Shigeya Suzuki. “Optimizing Timing of High-Success-Probability Quantum Repeaters.” arXiv:1701.04586, Jan. 2017. arXiv.

Internet Drafts

  • Shota Nagayama and R. Van Meter. “IKE for IPsec with QKD.” draft-nagayama-ipsecme-ipsec-with-qkd-01, Oct. 2014; expired Apr. 30, 2015. Internet-Draft.
  • Shota Nagayama and R. Van Meter. “IKE for IPsec with QKD.” draft-nagayama-ipsecme-ipsec-with-qkd-00, Oct. 2009; expired Apr. 22, 2010. Internet-Draft.

Hackathon Activities

  • Shota Nagayama, Shigeya Suzuki, and Hirotaka Nakajima. “Quantum Ping and Hackathon Report.” QIRG, IRTF104, Prague, Czech Republic, Mar. 2019.
  • Shota Nagayama and Hirotaka Nakajima. “Quantum Digital Signature: ‘Hanko’.” Quantum Internet Hackathon 2018, Amsterdam, Netherlands, Oct. 2018.

Workshop Presentations, Conferences Without Proceedings, and Posters

  • Shota Nagayama. “Scalable Quantum Network Infrastructure for Testbed Project,” Workshop on Quantum Network Engineering, IEEE Quantum Week 2025, Albuquerque, NM, USA, Sep. 2, 2025.
  • Daisuke Sakuma and Shota Nagayama. “Evaluating Optical-Loss and Connectivity Effects on Q-Fly Performance in Distributed Fault-Tolerant Quantum Computing.” IEEE QCE 2026, Toronto, ON, Canada, Sep. 2026.
  • Michal Hajdušek, Rodney Van Meter, Monet Tokuyama Friedrich, Akihito Soeda, and Shota Nagayama. “Timing Regimes in Quantum Networks and Their Physical Underpinnings.” IETF 125 QIRG, Shenzhen, China, Mar. 2026.
  • Rei Kawano, Shota Nagayama, and Takahiko Satoh. “RuleSet Generation Framework for Application Layer Integration in Quantum Internet.” IEEE QCE 2025, Albuquerque, NM, USA, Sep. 2025.
  • Kento Samuel Soon, Fumiyoshi Kobayashi, Naphan Benchasattabuse, and Shota Nagayama. “Surface Code Entanglement Ejection.” IEEE QCE 2025, Albuquerque, NM, USA, Sep. 2025.
  • Daisuke Sakuma, Yuta Imahoko, Michal Hajdušek, Rodney Van Meter, and Shota Nagayama. “Remote Operation Aware Logical Qubit Allocation in the Fault Tolerant Distributed Quantum Computing.” IEEE QCE 2025, Albuquerque, NM, USA, Sep. 2025.
  • Monet Tokuyama Friedrich, Alto Osada, Rodney Van Meter, and Shota Nagayama. “A Troubleshooting Framework for Trapping Ions.” 2025 IEEE International Conference on Quantum Computing and Engineering (QCE), Albuquerque, NM, USA, 2025, pp. 650–651. doi: 10.1109/QCE65121.2025.10490.
  • Amin Taherkhani, Kentaro Teramoto, Andrew Todd, Rodney Van Meter, and Shota Nagayama. “A Scalable Framework for Automation of Quantum Network Experiments.” 2024 IEEE International Conference on Quantum Computing and Engineering (QCE), Montreal, QC, Canada, 2024, pp. 624–625. doi: 10.1109/QCE60285.2024.10436.
  • Michal Hajdušek, Rod Van Meter, Monet Tokuyama, Akihito Soeda, and Shota Nagayama. “Timing Regime in Quantum Networks.” IETF119 QIRG, Mar. 2024.
  • Rodney Van Meter, Ryosuke Satoh, Makoto Nakai, and Shota Nagayama. IETF119 QIRG, Mar. 2024.
  • Fumiyoshi Kobayashi and Shota Nagayama. “Erasure-Tolerance Protocol for the Surface Codes on Rydberg Atomic Quantum Computers.” QIP, Jan. 2024.
  • Shota Nagayama and Rodney Van Meter. “Host Speaker Series: Quantum Internet.” IETF116, Mar. 2023. quantum simulations of stochastic differential equations. Asian Conference on Quantum Information Science 2021, Online Japan, Sep. 2021.
  • Shota Nagayama, Takahiko Satoh, and Kenji Kubo. “Fundamental Scheme to Descrive Scenarios in Extensive-Form Games by Quantum Annealing.” Asian Conference on Quantum Information Science 2019, Korea Institute of Advanced Study, Korea, Aug. 2019.
  • Shota Nagayama, Zhikuan Zhao, and Takahiko Satoh. “Conditions Which Determine Quantum Network Coding Useful in the Butterfly Network.” Asian Conference on Quantum Information Science 2018, Nagoya University, Japan, Sep. 2018.
  • S. Ni and Shota Nagayama. “Performance Comparison on CFRBM between GPU and Quantum Annealing.” GPU Technology Conference Japan 2018 (GTC Japan 2018), Sep. 2018.
  • Shota Nagayama, Shigeya Suzuki, Takahiko Satoh, Takaaki Matsuo, and Rodney Van Meter. “Analysis of Scalable Quantum Router Architecture with Code Interoperability.” 2nd Workshop for Quantum Repeaters and Networks, Austria, Sep. 2017.
  • Shota Nagayama, Shigeya Suzuki, Takahiko Satoh, Takaaki Matsuo, and Rodney Van Meter. “Scalable Quantum Router Architecture with Code Interoperability.” QCMC2016, Singapore, Jul. 2016.
  • Takaaki Matsuo, Takahiko Satoh, Shota Nagayama, Shigeya Suzuki, and Rodney Van Meter. “Wide-Area Topology of a Quantum Internet.” QCMC2016, Singapore, Jul. 2016.
  • Rodney Van Meter, Shigeya Suzuki, Shota Nagayama, Takahiko Satoh, Takaaki Matsuo, Amin Taherkhani, Simon Devitt, and Joe Touch. “Large-Scale Simulation of the Quantum Internet.” QCMC2016, Singapore, Jul. 2016.
  • Takahiko Satoh, Shigeya Suzuki, Shota Nagayama, Takaaki Matsuo, and Rodney Van Meter. “Routing on a Quantum Internet.” QCMC2016, Singapore, Jul. 2016.
  • Shigeya Suzuki, Rodney Van Meter, Shota Nagayama, Takahiko Satoh, and Takaaki Matsuo. “Architecture of Software Simulation of a Quantum Internet.” QCMC2016, Singapore, Jul. 2016.
  • Shota Nagayama, Byung-Soo Choi, Simon Devitt, Shigeya Suzuki, and Rodney Van Meter. “Error and Resource Estimation of Generalized Heterogeneous Coded Bell Pairs.” Workshop for Quantum Repeaters and Networks, Monterey, USA, 2015.
  • Shota Nagayama, Clare Horsman, Austin Fowler, and Rodney Van Meter. “Surface Code Quantum Computation on a Defective Physical Lattice.” JFLI Meeting on Quantum Information and Computation, Paris, France, Mar. 5, 2013.
  • Shota Nagayama, Clare Horsman, Austin Fowler, and Rodney Van Meter. “Surface Code Quantum Computation on a Defective Physical Lattice.” Quantum Error Correction 2011, Los Angeles, USA, Dec. 2011.
  • Shota Nagayama and Rodney Van Meter. “Defective Qubits in Surface Code Quantum Computation on a Fixed Lattice.” Asian Conference on Quantum Information Science 2010, The University of Tokyo, Japan, Aug. 2010.
  • Shota Nagayama and Rodney Van Meter. “RaQoon2: Extension of Internet Key Exchange to Use Quantum Key Distribution.” Updating Quantum Cryptography and Communications 2010, Japan, Nov. 2010.
  • Takahiko Satoh, Shota Nagayama, and Rodney Van Meter. “A Reversible Ternary Adder for Quantum Computation.” Asian Conference on Quantum Information Science 2010, The University of Tokyo, Japan, Aug. 2007.

Theses

  • Shota Nagayama. Distributed Quantum Computing Utilizing Multiple Codes on Imperfect Hardware. Doctoral dissertation, Feb. 2017. arXiv:1704.02620.
  • Shota Nagayama. Surface Code Quantum Computation on a Defective Physical Lattice. Master’s thesis, Feb. 2012.
  • Shota Nagayama. 量子鍵配送を利用したIPsecのためのIKE拡張 [Modifying IKE for IPsec with Quantum Key Distribution]. Bachelor’s thesis, Feb. 2010. PDF (in Japanese).

Domestic Activities in Japan

White Papers

  • Shota Nagayama, Rikizo Ikuta, Hideo Kosaka, Toshihiko Sasaki, Hiroki Takahashi, Kae Nemoto, Tomoyuki Horikiri, Rekishu Yamazaki, Takashi Yamamoto, and Rodney Van Meter. “The Quantum Internet — The Ultimate Cyberspace in the Universe.” Feb. 2021. link (in Japanese).

Invited Talks (Academic Conferences)

Invited Talks (Industrial Conferences and Other Meetings)

  • 永山翔太. “量子技術はデジタルビジネスを書き換えはじめた 〜スタンダードを変えていく〜,” Interop Tokyo Conference 2026, Jun. 2026.
  • 永山翔太. 「スケーラブルで強靭な統合的量子通信システム」, 第39回光通信シス-テムシンポジウム, Dec. 18, 2025.
  • 永山翔太. 「量子ネットワークが拓く未来」, 港区産学官連携セミナー, Nov. 17, 2025.
  • 永山翔太. 「量子インターネットへの道：ネットワーク化による量子コンピュータの進化」, JAIST産学官共創フォーラム 令和6年度第2回定期講演会, Oct. 31, 2024.
  • Shota Nagayama (Chair). “AIと量子コンピュータの今 ～量子コンピュータによってAIがどのように発展するのか～,” Interop Tokyo Conference 2024, Jun. 2024.
  • 永山翔太ほか. 「新技術を支えるインターネット基盤を考える」 Internet Week 2023, Nov. 2023.
  • 永山翔太. サイエンティフィックシステム研究会, Oct. 2023.
  • 永山翔太. Q2B Tokyo, Jul. 20, 2023.
  • 永山翔太. 「ネットワーク化する量子コンピュータ」 Interop Tokyo 2023 カンファレンス, Jun. 15, 2023.
  • 永山翔太. 「量子コンピュータと量子インターネットの基本」 Interop Tokyo 2023 展示会場内セミナー, Jun. 14, 2023.
  • 永山翔太. 「講演 量子インターネットの可能性」 光産業技術振興協会 光ネットワーク産業・技術研究会, May 8, 2023.
  • 永山翔太. 「量子コンピュータ/量子インターネットの可能性と現状、そしてこれから」 関西オープンフォーラム, Nov. 2022.
  • 永山翔太. 量子コンピューティングEXPO, Oct. 2022.
  • 永山翔太. 「IT事業者が知っておきたい量子コンピュータ ～アプリケーション、量子超越性、量子クラウド、量子AI～」 Interop Tokyo 2022, Jun. 16, 2022.
  • 永山翔太. 「量子セキュリティ：矛と『盾』」 Interop Tokyo 2022 カンファレンス, Jun. 16, 2022.
  • 永山翔太. 「IT業界人のための『これなら分かる、量子ネットワーク分類学』」 Interop Tokyo 2022, Jun. 16, 2022.
  • 永山翔太. 「IT業界人のための『これなら分かる、量子コンピュータ分類学』」 NOM ONLINE SEMINAR, Jun. 1, 2022.
  • 永山翔太. 「量子コンピュータと量子インターネットがある世界」 クラウドカンファレンス, Sep. 2021.
  • 永山翔太. 「量子インターネットの目指す世界 ～欧米中の動向とユースケース～」 株式会社新社会システム総合研究所セミナー, Aug. 2021.
  • 永山翔太. 「量子インターネットとは、その現状」 SMBC投資家向けテーマセミナー, Aug. 2021.
  • 永山翔太. 「メルカリにおける量子情報研究」 IPA量子コンピューティングシンポジウム, Tokyo, Japan, Mar. 2019.
  • 永山翔太ほか. 「パネルディスカッション『研究開発の方向性』」 Nov. 2022. link.
  • Shota Nagayama. “Communication Technologies in the Age of Quantum Information: The Quantum Internet.” Mercari Tech Conference 2018, Japan, Oct. 2018.

Talks in Symposiums

Shota Nagayama. “Scalable and Robust Integrated Quantum Communication System,” Quantum Innovation 2025, Aug. 2, 2025.

Panel Discussions

  • 永山翔太ほか. パネルディスカッション「量子インターネット実現へ ～ユースケースとコストから見る未来展望～」, 情報処理学会 連続セミナー2024, Jun. 19, 2024.

Contributions to Books and Other Publications

  • 永山翔太. 「量子が紡ぐ新たな世界：7．量子インターネットの基本構成―量子コンピュータを相互接続した先の世界へ―」 情報処理, vol. 66, no. 1, pp. e39–e47, Dec. 2024.
  • 永山翔太. 「量子インターネット」 インターネット白書2024, 株式会社インプレス, Feb. 2024.
  • 永山翔太. 「量子インターネットの基礎と今後の可能性」 量子技術の実用化と研究開発業務への導入方法, 株式会社技術情報協会, Nov. 2022.
  • 永山翔太. 「量子インターネットの展望」 O plus E, アドコム・メディア株式会社, Sep.–Oct. 2022.
  • 永山翔太. 「量子インターネットの基礎と今後の可能性」 研究開発リーダー, 株式会社技術情報協会, Oct. 2021.

Workshops, Conferences Without Proceedings, and Posters

  • 小林佳史 and 永山翔太. 「Rydberg原子量子コンピュータ上の表面符号における消失エラーの解析」 電子情報通信学会量子情報技術研究会（QIT）第29回, Dec. 2023.
  • 永山翔太. 「線形量子ネットワークにおけるエンドツーエンドの量子もつれ蒸留」 IPSJ 量子ソフトウェア研究会, Mar. 2022.
  • 久保健治 and 永山翔太. 「変分量子計算による確率微分方程式のシミュレーション」 第1回量子ソフトウェア研究発表会, Oct. 2020.
  • Kenji Kubo and Shota Nagayama. “Applicability and Challenges of NISQ Algorithm to Financial Derivative.” The 41st Quantum Information Technology Symposium (QIT41), Tokyo, Japan, Nov. 2019.
  • Takayuki Suzuki and Shota Nagayama. “Analysis on Quantum Annealing Based on Quantum Master Equation.” The 41st Quantum Information Technology Symposium (QIT41), Tokyo, Japan, Nov. 2019.
  • Kanto, Teranishi, and Shota Nagayama. “Quantum Annealing for Minimum Cut of a Simple Graph.” The 41st Quantum Information Technology Symposium (QIT41), Tokyo, Japan, Nov. 2019.
  • Shota Nagayama, Clare Horsman, Austin Fowler, and Rodney Van Meter. “Surface Code Quantum Computation on a Defective Lattice.” FIRST Project Summer School, Okinawa, Japan, Jul. 2012.
  • Shota Nagayama, Clare Horsman, Austin Fowler, and Rodney Van Meter. “Surface Code Quantum Computation on a Defective Lattice.” FIRST All-Hands Meeting, Dec. 2011.
  • Shota Nagayama and Rodney Van Meter. “Defective Qubits in Surface Code Quantum Computation on a Fixed Lattice.” FIRST Project Summer School, Okinawa, Japan, Aug. 2010.
  • Shota Nagayama and Rodney Van Meter. “Defective Qubits in Surface Code Quantum Computation on a Fixed Lattice.” FIRST All-Hands Meeting, Kyoto, Japan, Dec. 2010.
  • 永山翔太. 「量子鍵配送を使ったIPsecのためのIKE拡張」 Internet Conference 2009, Kyoto, Japan, Oct. 2009.

Committee and Working Group Reports

  • Rodney Van Meter and Shota Nagayama, for the WIDE AQUA group members. “AQUA: Advancing Quantum Architecture Annual Report 2010.” WIDE Project Working Group Report, Dec. 2010. Brief introduction to “Why quantum?” and a snapshot of work at SFC and across the WIDE Project.

Tutorials and Seminars

  • Shota Nagayama. “Quantum Network Testbed Efforts in Japan,” Okinawa School in Physics 2025: From QKD to Quantum Internet, OIST, Sep. 23, 2025.
  • 永山翔太. 「量子インターネットのこれまでとこれからの研究開発」, 北陸先端科学技術大学院大学 第28回研究科セミナー, Jan. 20, 2025.
  • Shota Nagayama. “Surface Code Quantum Computation.” National Institute of Advanced Industrial Science and Technology (AIST), Nanoelectronics Research Institute, Oct. 10, 2019.
  • Shota Nagayama. “Fault-Tolerant Quantum Computation and Quantum Communication.” QCX2, Aug. 7, 2019.
  • FIRST/Quantum Cybernetics/CREST Joint 1.5-Day Surface Code Quantum Error Correction Tutorial/Workshop, Feb. 23–24, 2011.

Other Presentations

  • 永山翔太 (Moderator). Panel Discussion, NEDO量子キャラバン in 沖縄, Jul. 22, 2026.
  • 永山翔太. 講演, NEDO量子キャラバン in 広島, Jun. 1, 2026.
  • 永山翔太. “Quantum Network Project in Japan.” ミニワークショップ@OIST, Elkouss グループ, Nov. 9, 2022.
  • “Heterogeneously Encoded Bell Pairs.” Ritsumeikan University, Shiga, Japan, Jul. 2015.
  • “Surface Code Quantum Computation on a Defective Physical Lattice.” Georgia Institute of Technology, Feb. 2013.
  • “Surface Code Quantum Computation on a Defective Physical Lattice.” Kyoto, Jan. 2013.
  • Shota Nagayama. “Surface Code Quantum Computation on a Defective Physical Lattice.” Microsoft Research, Feb. 15, 2012.
  • “Surface Code on Defective Lattice.” The University of Melbourne, Apr. 2011.
  • “IPsec with QKD.” WIDE Camp Spring 2009, Mar. 2009.

Patents

Holds five patents in quantum information technology.