SNP School 2026

2026年9月7日(月) - 11日(金)

We are pleased to announce that the SNP School 2026 will be held at Aobayama Campus, Tohoku University, from 7th to 11th, September, 2026. This is the 15th of the series which has been held every year since 2012. The school provides lectures that cover subjects from basics to the frontiers of strangeness nuclear physics as well as other related fields such as astrophysics, atomic physics, etc. Lecturers are invited both from theoretical or experimental physics, and their materials are prepared to be useful to students and also to researchers who would have wider interests. For more details, please see the related link.

会場: via Zoom

イベント公式言語: 英語

Magic state distillation and cultivation #1

2026年9月10日(木) 10:30 - 12:00

平野 裕 (Research Scientist, Nanofiber Quantum Technologies)

本セミナーでは、誤り訂正において重要な概念である"distillation"や"cultivation"について講義形式で説明していただきます。対面およびZoomのハイブリット形式ですが、機器の都合によりZoom配信が困難な可能性がありますので、対面参加を推奨しています。 講義にあたって、以下の事項の理解は前提とします。 A. 量子計算の基礎 (quantum state, quantum gate, measurement, quantum circuit, Pauli gate, Clifford gate, Non-Clifford gate) B. 量子エラー訂正の概念（quantum error correction, decoding） これらは、Nielsen and Chuang [1] が最もまとまっています。 以下の事項は講義で紹介しますが、理解しているとより良いかもしれません。 C. 論理ゲート及び FTQC [1] D. surface code [2], [3] E. lattice surgery [4] なお、B-E については、https://docs.qc500.org/ の "Quantum Error Correction" にもまとまっています。 [1]: M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge University Press, 2000). [2]: A. Yu. Kitaev, “Fault-tolerant quantum computation by anyons,” Ann. Phys. 303, 2–30 (2003). [3]: H. Bombin and M. A. Martin-Delgado, "Optimal Resources for Topological 2D Stabilizer Codes: Comparative Study," Phys. Rev. A 76, 012305 (2007). [4]: D. Horsman, A. G. Fowler, S. Devitt, and R. Van Meter, "Surface code quantum computing by lattice surgery," New J. Phys. 14, 123011 (2012).

会場: セミナー室 (359号室) (メイン会場) / via Zoom

イベント公式言語: 日本語

Magic state distillation and cultivation #2

2026年9月10日(木) 13:30 - 17:00

平野 裕 (Research Scientist, Nanofiber Quantum Technologies)

本セミナーでは、誤り訂正において重要な概念である"distillation"や"cultivation"について講義形式で説明していただきます。対面およびZoomのハイブリット形式ですが、機器の都合によりZoom配信が困難な可能性がありますので、対面参加を推奨しています。 講義にあたって、以下の事項の理解は前提とします。 A. 量子計算の基礎 (quantum state, quantum gate, measurement, quantum circuit, Pauli gate, Clifford gate, Non-Clifford gate) B. 量子エラー訂正の概念（quantum error correction, decoding） これらは、Nielsen and Chuang [1] が最もまとまっています。 以下の事項は講義で紹介しますが、理解しているとより良いかもしれません。 C. 論理ゲート及び FTQC [1] D. surface code [2], [3] E. lattice surgery [4] なお、B-E については、https://docs.qc500.org/ の "Quantum Error Correction" にもまとまっています。 [1]: M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge University Press, 2000). [2]: A. Yu. Kitaev, “Fault-tolerant quantum computation by anyons,” Ann. Phys. 303, 2–30 (2003). [3]: H. Bombin and M. A. Martin-Delgado, "Optimal Resources for Topological 2D Stabilizer Codes: Comparative Study," Phys. Rev. A 76, 012305 (2007). [4]: D. Horsman, A. G. Fowler, S. Devitt, and R. Van Meter, "Surface code quantum computing by lattice surgery," New J. Phys. 14, 123011 (2012).

会場: セミナー室 (359号室) (メイン会場) / via Zoom

イベント公式言語: 日本語

Making robust reionisation 21 cm signal predictions with C21LRT

2026年9月11日(金) 14:00 - 15:15

Qin Han (芝浦工科大学 JSPS特別研究員)

The redshifted 21 cm line signal is a unique probe for the Epoch of Reionisation by tracking the evolution of the averaged intergalactic medium properties as well as their fluctuations, enabling tomographic studies. Accurate modelling of the 21 cm global and power spectrum signals is crucial for interpreting measurements from current and forthcoming 21 cm experiments. Theoretical predictions usually post-process reionisation simulations with optical depth approximation, which treats local line broadening and peculiar velocities approximately and often leads to divergences due to its velocity gradient term. I will present our cosmological 21 cm line radiative transfer (C21LRT) formulation which resolve these issues naturally. I will compare the 21-cm signals calculated with C21LRT and the conventional optical depth method, and highlight the need to fully quantify the uncertainties of using the optical depth method for exploring the 21-cm signals associated from various possible reionisation scenarios.

会場: 研究本館 2階 220号室とZoomのハイブリッド開催

イベント公式言語: 英語

Primtive form of singularity and mirror symmetry

2026年9月11日(金) 15:30 - 17:30

テツ・オウ (理化学研究所 数理創造研究センター (iTHEMS) 数理基礎部門 研究員)

In 1980s, K. Saito introduced the primitive forms in his study of periods as to generalize the elliptic period integral theory to higher dimensions. An important consequence was that there exists a flat structure on the space of universal unfolding of a singularity. Later after Witten proposed his famous conjecture relating the intersection theory on moduli space to the integrable hierarchy, this flat structure was re-discovered by Dubrovin, and nowadays it is referred as a Frobenius mafniold structure. Frobenius mafniolds provide a convenient tool for formulating the mirror symmetry, which was a special type of duality among string theories orginally studied by physicits. In this talk, I will explain the related constructions, and show by examples how the study of primitive forms gives prediction of geometric quantities such as Gromov-Witten invariants.

会場: セミナー室 (359号室) 3階 359号室

イベント公式言語: 英語

Tannaka duality for spectral sheaves on compact Hausdorff spaces

2026年9月17日(木) 15:00 - 16:30

青木 孔 (Postdoc, University of Copenhagen, Denmark)

Tannaka duality asks to what extent a geometric object can be recovered from a category naturally associated with it. In this talk, the geometric objects are topological spaces, and the associated categories are their categories of sheaves of spectra. I showed that, for compact Hausdorff spaces X and Y, every colimit-preserving symmetric monoidal functor from Shv(X; Sp) to Shv(Y; Sp) arises uniquely from a continuous map from Y to X, where Shv(X; Sp) denotes the (∞, 1)-category of sheaves of spectra on X. The main ingredient is an adjunction between the construction of sheaves and a new variant of the smashing spectrum. I will also discuss variants of this machinery to broader classes of spaces, including ongoing work on toposes.

会場: via Zoom / セミナー室 (359号室)

イベント公式言語: 英語

Quantum Information: Entanglement of Mathematics & Physics

2026年9月21日(月) - 23日(水)

This workshop brings together mathematicians and physicists to explore the deep connections among quantum information, mathematics, and physics. Topics span quantum gravity, condensed matter physics, quantum computing, and quantum error correction, with an emphasis on the mathematical structures that underlie entanglement and quantum information across these fields. The program is designed to foster genuine cross-disciplinary dialogue, allowing ample time for discussion alongside formal talks. [Invited speakers] Akira Furusaki (RIKEN CEMS/iTHEMS) Marcel Franz (UBC / SBQMI) Ching-Kai Chiu (iTHEMS) Jasmin Bedow (UBC) Max McGinley (UBC) Yosuke Kubota (Kyoto University) Shunji Matsuura (RIKEN iTHEMS) Bartosz Regula (RIKEN RQC) Ryuji Takagi (University of Tokyo) Sisi Zhou (Perimeter Institute) Olivia Di Matteo (UBC / SBQMI) Daochen Wang (UBC Computer Science) Polina Feldmann (UBC) Masazumi Honda (RIKEN iTHEMS) Yasuyuki Kawahigashi (RIKEN iTHEMS) Carolyn Zhang (UBC) Masahito Yamazaki (Kavli IPMU, University of Tokyo) Aswin Parayil Mana (University of Tokyo) Alex May (Perimeter Institute) Masamichi Miyaji (RIKEN iTHEMS) Mark Van Raamsdonk (UBC Physics & Astronomy)

会場: University of British Colombia

イベント公式言語: 英語

Workshop on Gestalt

2026年9月24日(木) - 30日(水)

青木 孔 (Postdoc, University of Copenhagen, Denmark)

Note. The lectures will be given in Japanese. This workshop will be jointly organized by RIKEN AIP. During this five-day workshop, we will hold a learning seminar and intensive lectures on gestalt theory, which was recently developed by Scholze and Stefanich. Gestalt theory is a new geometric framework that unifies various derived analytic geometry and higher sheaf theory, building on the foundations of higher and derived category theory. At this event, we will host Ko Aoki, who has contributed to the foundations and development of the theory, for the intensive lecture session. During the first three days of the workshop, we will feature tutorial lecture sessions, presented by the participants. All lectures will be given in Japanese, with the aim of promoting the dissemination and development of gestalt theory in Japan.

会場: 慶應義塾大学 矢上キャンパス

イベント公式言語: 日本語

Foundations of Quantum Programming Lecture

2026年9月28日(月) - 10月2日(金)

Mingsheng Ying (Professor, University of Technology Sydney, Australia)

Lecture Professor Mingsheng Ying is internationally recognised for his contributions to quantum computing, quantum programming, and quantum software verification. He is a Distinguished Professor at the UTS Centre for Quantum Software and Information at the University of Technology Sydney. His research interests include quantum computation, programming language theory, quantum program semantics, verification, and the foundations of quantum software. Professor Ying is Co-Editor-in-Chief of ACM Transactions on Quantum Computing and has served in editorial roles for several leading journals and conferences. Abstract Recent advances in quantum hardware have brought the field from prototype devices to increasingly practical platforms. To fully realise the potential of quantum computing, quantum programming and software-development technologies will play a crucial role. This lecture series systematically introduces the theoretical foundations of quantum programming, including operational and denotational semantics, quantum program logics with an emphasis on quantum Hoare logic, verification and analysis of quantum programs, and quantum recursive programming. The lectures will also discuss open problems that may inspire future research in quantum programming.

会場: SUURI-COOL (Kyushu) C502（九州大学 伊都キャンパス West 1号館 D棟） (メイン会場) / via Zoom

イベント公式言語: 英語

Foundations of Quantum Programming Mini-Workshop & Contributed Talks

2026年9月28日(月) - 10月2日(金)

Mingsheng Ying (Professor, University of Technology Sydney, Australia)
落合 啓之 (九州大学 マス・フォア・インダストリ研究所 教授)
Jianjun Zhao (九州大学 教授)
Minh Canh Do (北陸先端科学技術大学院大学 講師)

会場: SUURI-COOL (Kyushu) C502（九州大学 伊都キャンパス West 1号館 D棟） (メイン会場) / via Zoom

イベント公式言語: 英語

Adaptive Regulation through Model-Observation Mismatch: From Process Control to Cognitive Neurorobotics

2026年10月8日(木) 13:00 - 14:00

Henrique Oyama (沖縄科学技術大学院大学 (OIST) 認知脳ロボティクス研究ユニット ポスドク研究員)

Adaptive behavior requires biological and artificial systems to respond when their internal models no longer match what they observe. How can such discrepancies be used not only to correct predictions, but also to regulate how a system interacts with its environment? In this talk, I will explore this question across two research directions spanning process control and cognitive neurorobotics. First, I will introduce a model predictive control framework in which a controller actively guides a nonlinear process toward informative conditions to distinguish among competing models while maintaining safe operation. I will then move to cognitive neurorobotics, where brain-inspired computational principles are used to investigate perception, prediction, and action in embodied artificial agents. In physical human-robot interaction, I will show how a predictive-coding-inspired recurrent neural network enables a humanoid robot to regulate the balance between its learned expectations and sensory information arising from human-guided movements. In particular, recent mismatches between sensory observations and the robot's internal model are used to regulate how strongly it relies on its learned dynamics or accommodates ongoing interaction. Together, these studies illustrate how model-observation mismatch can provide a general signal for adaptive regulation, connecting ideas from control engineering, artificial intelligence, neuroscience, and embodied cognition.

会場: 研究本館 3階 359号室とZoomのハイブリッド開催 / via Zoom

イベント公式言語: 英語

Quantum Computing for Nuclear Physics (QC-NP 2026)

2026年10月13日(火) - 16日(金)

Join us for a comprehensive workshop on the application of quantum computing to nuclear physics, bringing together experts from around the world to share the latest developments and advancements in this rapidly evolving field. The workshop will cover a broad range of topics, including quantum algorithms, quantum computing hardware, and their applications to lattice field theories, gauge field theories, scattering, nuclear structure, and nuclear astrophysics. The workshop will provide ample opportunities for participants to exchange ideas, share their research, and initiate new collaborations. Through a combination of presentations and interactive discussion sessions, we aim to foster a collaborative environment that drives innovation and advances our understanding of the intersection of quantum computing and nuclear physics. [Workshop Schedule] The workshop will start from the morning of October 13 The banquet will be held on the evening of October 15 [Important Dates] Registration deadline with oral presentation: August 31, 2026 Recommended to register by: August 31, 2026 [Invited Speakers] A. Baha Balantekin (University of Wisconsin Madison) Raul Briceño (University of California Berkeley/Lawrence Berkeley National Laboratory) Philipp Höhn (Okinawa Institute of Science and Technology Etsuko Itou (Kyoto University) Dima Kharzeev (Brookhaven National Laboratory/Stony Brook University) Yuta Kikuchi (Quantinuum) Denis Lacroix (IJCLab) Dean Lee (Michigan State University) Mario Motta (IBM Quantum) Takeshi Sato (University of Tokyo) Ionel Stetcu (Los Alamos National Laboratory) Paul Stevenson (University of Surrey) Nathan Wiebe (University of Toronto) Seiji Yunoki (RIKEN) [Organizers] Ermal Rrapaj (Lawrence Berkeley National Laboratory/RIKEN, Chair) Carlo Barbieri (University of Milan) Tetsuo Hatsuda (RIKEN) Masaaki Kimura (RIKEN/University of Tokyo) Haozhao Liang (University of Tokyo) Tomoya Naito (University of Tokyo/RIKEN) Enrico Prati (University of Milan) Alessandro Roggero (University of Trento) Takeshi Sato (University of Tokyo)

会場: 東京大学 本郷キャンパス 理学部１号館

イベント公式言語: 英語

From data to cohomologies of digraphs, to representations of categories

2026年10月13日(火) 10:30 - 12:00

Luigi Caputi (Research Fellow, Department of Mathematics, University of Bologna, Italy)

Motivated by applications to topological data analysis, in the last years we have been witnessing a growing interest in new (topological, homological, categorical) features associated to graphs. The aim of the talk is to describe a recently developed (co)homology theory of directed graphs, called multipath cohomology, whose definition is inspired by Khovanov homology of knots. We will show its relations with more established invariants, such as chromatic homology of graphs, Hochschild homology of algebras, and matching complexes. If time allows it, we will show that the ranks of multipath cohomology, when restricted to graphs with bounded genus, grow at most polynomially in the number of edges, and that the order of its torsion is bounded. This will depend upon structural properties of (the representation category of) graphs, such as its Noetherianity properties.

会場: 研究本館 3階 359号室 (メイン会場) / via Zoom

イベント公式言語: 英語

Majorana Modes: Fundamentals, Status & Directions

2026年10月13日(火) - 16日(金)

Workshop Overview Majorana modes lie at the heart of contemporary condensed-matter physics, exhibiting non-Abelian exchange statistics; when protected by topology, they are robust against environmental perturbations. Here, “Majorana mode” is used broadly to include a localized zero-energy Majorana state (a Majorana zero mode) and chiral Majorana edge states with gapless dispersion crossing zero energy. This three-day in-person workshop returns to fundamentals and open questions. It opens with a tutorial session on the afternoon of October 13 for non-experts and adjacent fields, and emphasizes rigorous theory–experiment dialogue, robust methodology, and concrete benchmarks for realizing and testing Majorana modes. Participants Experimentalists and theorists working on Majorana modes Researchers in adjacent fields (quantum materials, superconductivity, mesoscopic physics) Graduate students and postdocs interested in entering the field Topics include (non-exhaustive) Majorana zero modes in a variety of nanostructures Chiral Majorana edge states in quantum spin liquids and other platforms Disorder, interactions, and realistic device modeling Experimental diagnostics and “smoking gun” signatures Topological Quantum Spin Systems

会場: 大河内記念ホール

イベント公式言語: 英語

AI and Scientific Discovery

2026年10月19日(月) 14:00 - 15:30

Joseph Ledsam (Google Health Lead, Japan, Google Japan)

Artificial intelligence is having a transformative impact on health and scientific discovery. This presentation will trace the evolution from foundational breakthroughs to the sophisticated capabilities of today's large-scale AI models. It will explore how these advanced systems are creating new possibilities across the healthcare landscape, from accelerating therapeutic development to enhancing diagnostic processes and interpreting complex medical data. The session will also take a deeper look at the future possibilities for AI in health and explore the emerging role of agentic AI in scientific discovery. The core theme is the responsible development of AI to create tools that assist scientists, support healthcare professionals, and empower users. Bio: Dr Joseph Ledsam leads Google Health in Japan, where he works across AI research, digital health and health in Google products. He has led research in medical AI, genomics and drug discovery published in journals including Nature, Nature Medicine and Nature Methods. Before moving to Japan he worked as a medical doctor in the UK, and founded the Health Research and Genomics teams in Google DeepMind. He obtained his medical degree from The University of Leeds, UK, and was a research fellow at University College London during his clinical residency.

会場: 研究本館 435-437号室 (メイン会場) / via Zoom

イベント公式言語: 英語

A non-negative matrix factorization-based approach to integrating multimodal omics data with automatically tuned hyperparameters

2026年11月16日(月) 14:00 - 15:00

ドロシー・エリス (理化学研究所 生命医科学研究センター (IMS) 統合ゲノミクス研究チーム 特別研究員)

会場: via Zoom

イベント公式言語: 英語

KEK(-iTHEMS) Theory Workshop 2026

2026年11月25日(水) - 27日(金)

林 博貴 (東海大学 理学部物理学科 教授)
川合 光 (大阪公立大学 南部陽一郎物理学研究所 客員教授)
森 崇人 (総合研究大学院大学 高エネルギー加速器科学研究科 素粒子原子核専攻 博士課程)
中川 大也 (東京大学 大学院理学系研究科 物理学専攻 助教)
重森 正樹 (名古屋大学 大学院理学研究科 理学専攻 物理学第二 教授)
高柳 匡 (京都大学 基礎物理学研究所 教授)
棚橋 典大 (京都大学 大学院理学研究科 学習物理学特別講座 特定准教授)
山岡 起也 (大阪大学 大学院理学研究科 物理学専攻 博士課程)

The KEK Theory Workshop is an annual workshop on string theory and quantum field theory. Since 2014, it has been held every winter as an international workshop and has become one of the major annual events in the high-energy physics community in Japan. This year’s workshop will be held on site at the KEK Tsukuba Campus from November 25 to 27, and it will be jointly organized with RIKEN iTHEMS. The workshop this year aims to provide a forum for extensive discussions on recent developments in string theory, matrix models, gauge/gravity duality, black-hole microstates, lattice constructions of chiral gauge theories, and open quantum systems.

会場: Seminar Hall, Building 3, KEK Tsukuba Campus

イベント公式言語: 英語

iTHEMS NOW & NEXT 2027

2027年7月13日(火) - 15日(木)

We will hold our annual gathering, **“iTHEMS NOW & NEXT 2027,” from July 13 to 15, 2027**. iTHEMS NOW & NEXT has traditionally been a two-day in-house event, providing an important opportunity for all iTHEMS members, including visiting researchers and new members, to gain a comprehensive overview of current activities across iTHEMS, to learn about research beyond their own fields, and to discuss where iTHEMS should go next. In 2027, we will **expand NOW & NEXT from two to three days** and, for the first time, invite leading researchers from outside iTHEMS across a broad range of research fields. While the first two days will retain the main character of our traditional in-house gathering, the extended three-day format is intended to create a broader opportunity for scientific exchange and, in particular, to enable leading researchers from outside iTHEMS to become better acquainted with our research activities and with the researchers who make up the iTHEMS community. As in previous years, the program will present activities across iTHEMS, including those of its divisions, research teams, working groups, and study groups, together with research presentations and poster sessions by iTHEMS members. Particular emphasis will be placed on communication across disciplinary and organizational boundaries and on identifying emerging research directions and opportunities for new collaborations. The additional third day will build on the presentations and discussions of the preceding two days and provide an opportunity for invited researchers to gain a deeper understanding of the breadth and strengths of research at iTHEMS and to interact directly with our members. We hope that these exchanges will not only introduce iTHEMS and its researchers more widely to leading scientists in different fields, but also bring new perspectives to our community and open possibilities for future scientific interactions and collaborations. Through this expanded three-day NOW & NEXT 2027, we hope to share where iTHEMS is now and where it is heading next, both within our own community and with leading researchers from outside iTHEMS, and to explore together new possibilities for the future development of iTHEMS.

会場: 理化学研究所和光キャンパス 本部棟2階大会議室 (メイン会場) / via Zoom

イベント公式言語: 英語