In recent years, interest in quantum fundamentals has been on the rise, partly because of developments in quantum information science. Fundamental problems such as the violation of Bell inequalities, which had previously remained in the realm of philosophy of science, are essential for quantum teleportation, the security of quantum cryptography, and the basis for improving the speed of quantum computation. Quantum foundations are now given renewed consideration worldwide. It is of great benefit to the scientific community and to society in general that it has become much easier to participate in research into quantum foundations, giving more and more young students and researchers a chance to discuss quantum foundations and to contribute confidently to the frontiers of research. However, there is still a lack of events focusing on quantum foundations in Japan, and there are few opportunities for young people to present their research in a motivating and constructive atmosphere. Given this situation, the workshop “Quantum Foundations” (abbreviated as QF) was established in 2024 and is held annually. The third QF will be held for the first time in Kansai (at The University of Osaka).

Keywords: interpretation of quantum mechanics, measurement problem, uncertainty, Bell's theorem, quantum nonlocality, entanglement, quantum measurement, quantum open system, irreversibility, general probability theory, fundamental of probability concept, formalization of quantum mechanics (quantum field theory), weak value, information and measurements, (quantum) contextuality, random number, information thermodynamics, quantum cryptography, quantum communication, quantum computation, quantum gravity, quantum cosmology, causality, time, etc.

1. March 5 and 6, 2026
2. Venue: The University of Osaka (Nambu Yoichiro Hall)+online
3. Participation fee: 500 yen
4. Banquet: Thursday, March 5th, Venue: Toyonaka Campus, Participation Fee: 3,500 yen (tentative)
5. Quantum Foundations invites a wide range of presenters.
6. We would like to provide an opportunity for young people, including students, to feel free to present their research.
7. Online presentations are acceptable, but face-to-face presentations will be given priority. Depending on the number of participants, poster presentations may also be held.
8. The presentation time will be 20-25 minutes plus 5-10 minutes for Q&A, depending on the workshop program.
9. The workshops will be recorded for archival purposes. Photography (including screen shots) and video recording of lectures and posters by individuals are prohibited.

1. Registration Form（←click）
2. Oral presentation requests: Due by February 13, 2026
   *The title and summary will be published on our website.
   *Results (whether oral or poster presentation, etc.) will be announced by email by February 21, 2026.
3. Poster presentation requests: Due by February 19, 2026
4. Banquet (March 5) Participation: Due by February 19
5. Registration: Due by March 1st

Inquiry

• quantum.found[at_mark]gmail.com (please replace [at_mark] with @)

Invited Talk (Titles omitted)：

• ● Akio Fujiwara（The University of Osaka）About "Quantum local asymptotic normality"
• ● Eyuri Wakakuwa（Nagoya University）About "Quantum Information Theory (Quantum Shannon Theory)"

• QF25: Program and abstracts

Student Presentation Award We established this award to recognize students who have presented outstanding research in quantum foundations. We encourage you to apply!

1. Eligibility: Applicants must be undergraduate or graduate students, or individuals who have completed graduate studies within about three years, and who have presented an oral or poster presentation at Quantum Foundations. For details, refer to the “Quantum Foundations Award (Student Presentation Award) Regulations.”
2. Based on the voting by the award committee members, the final awardees will be determined through deliberation by the award committee. Awardees will be notified individually, and the results will also be announced on the research group's website.
3. Application Form
4. Deadline: February 13, 2026
5. Quantum Fundamentals Award (Student Presentation Award) Regulations

Executive committee members (Japanese alphabetical order) : Hayato Arai (Univ. of Tokyo), Masataka Iinuma (Hiroshima Univ.), Gen Kimura (SIT), Yui Kuramochi (Kyushu Univ.), Ryo Takakura (Osaka Univ.), Shogo Tanimura (Nagoya Univ.), Izumi Tsutsui (KEK, Nihon Univ.), Naomichi Hatano (Univ. of Tokyo ), Akio Hosoya (TIT), Shintaro Minagawa (Aix-Marseille Univ.), Jaeha Lee (Univ. of Tokyo)