# Outline of Project A01

## Quantum information for theoretical physics (21H05183)

Quantum mechanics has mysterious properties not found in classical physics, such as quantum superposition, uncertainty principle, and no-cloning. The research field of quantum information exploits these mysterious properties to realize unprecedentedly high performance information processing technology. In particular, quantum computation, which enables high-speed calculations, and quantum cryptography, which enables various new cryptographic tasks not possible in classical physics, are major applications, and active research has been conducted in this field. In addition, the promotion of such research on quantum information technology will make it clear what can and cannot be done with quantum. This will also help us to understand why the mysterious quantum theory is the way it is. To truly understand why quantum theory is so mysterious is a long-standing goal of physicists that has existed since the time quantum theory was created.

Moreover, the results, insights, and techniques obtained from quantum information are proving to be useful in other physics as well. Various concepts such as AdS/CFT in particle theory, distribution functions in statistical physics, tensor networks in condensed matter physics, and quantum randomness in black holes can be studied from a new perspective through quantum information.

This project group is composed of experts in quantum information, and its role is to provide other groups with the necessary "language" to achieve the overall goal of creating physical laws of the extreme universe based on quantum information, and to refine the language by deepening the basic theory of quantum information itself.

### Members in A01

**[Principal Investigator]**

Tomoyuki Morimae Yukawa Institute for Theoretical Physics, Kyoto University

**[Co-Investigator]**

Yoshifumi Nakata Yukawa Institute for Theoretical Physics, Kyoto University

Koji Azuma NTT Basic Research Laboratories

Francesco Buscemi Department of Mathematical Informatics, Nagoya University

**[ExU Lecturer (Research Collaborators)]**

Andrew Darmawan Yukawa Institute for Theoretical Physics, Kyoto University

**[Research Collaborators]**

Michele Dall’Arno Toyohashi University of Technology

Hayata Yamasaki Graduate School of Science, The University of Tokyo

Go Kato Advanced ICT Research Institute, NICT

Ryu Hayakawa Yukawa Institute for Theoretical Physics, Kyoto University

**[Post-doc fellow]**

Aditya Nema Department of Mathematical Informatics, Nagoya University

**[Graduate students]**

Taiga Hiroka Yukawa Institute for Theoretical Physics, Kyoto University

Takaya Matsuura Graduate School of Engineering, The University of Tokyo

Shiro Tamiya Graduate School of Engineering, The University of Tokyo

**[Past members]
**Misaki Yonekawa Yukawa Institute for Theoretical Physics, Kyoto University

Takumi Kagitani Yukawa Institute for Theoretical Physics, Kyoto University

Arthur Parzygnat Department of Mathematical Informatics, Nagoya University (Moved to MIT, Experimental Study Group)