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Matsueda Lab
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The lab theoretically explores condensed matter and spacetime physics using quantum entanglement as a clue.
AboutAbout the lab
Aiming to unite quantum information, condensed matter physics, and spacetime physics!
The Matsueda Lab (Quantum Information Physics Division) theoretically studies difficult problems in physics and mathematical science, centered on entanglement (quantum entanglement) and the holographic principle.
Its work on quantum problems is broad, ranging from research that reconstructs theoretical physics through the ideas of quantum information to theories concerning the observation and control of entanglement in systems where many quanta are entangled.
In applied research such as electronic properties of materials, quantum computers, and artificial intelligence, the lab holds that understanding how these work requires knowledge of quantum physics, and it collaborates with researchers in different specialties.
The lab welcomes students who want to pursue challenging research that crosses these fields.
Key terms
- Entanglement
- Quantum entanglement. The correlation between quantum particles even when they are far apart. The most fundamental state for realizing quantum information and communication.
- Holographic principle
- The idea that a theory in the bulk can look like a completely different theory at the boundary. It allows a complex system to be converted equivalently into one that is easier to understand.
- Singular value decomposition
- An algorithm used in information processing for principal component analysis and feature extraction. In physics, it has also been used for the precise representation of quantum entanglement.
- Renormalization group
- In physics, an extremely important perspective as a way of extracting the features of a system.
NewsLab news
A paper by Assistant Professor Binho was published in Materials for Quantum Technology
A doctoral student won a poster award at the International Conference on Strongly Correlated Electron Systems 2026 (SCES2026)
A paper by Assistant Professor Binho was published in Physical Review A
A paper by Assistant Professor Binho was published in Physical Review A
A paper by Assistant Professor Binho was published in Machine learning: Science and Technology
ResearchResearch themes
The lab aims to solve difficult problems in physics and mathematical science with clear insight, using concepts from quantum information and higher-dimensional perspectives. At the center are entanglement and the holographic principle, and both ideas are used in the research below.
*Illustrative imageExtracting Features of Physical Systems with Singular Value Decomposition
The lab applies singular value decomposition, which is used in information processing, to physics, seeking to clarify a mechanism that automatically extracts the important information of a system. Analysis of classical statistical models has led to deep understanding related to critical phenomena at phase transitions and to renormalization group theory.
*Illustrative imageReplacing Quantum Systems with Classical Spacetime
If one considers a memory space that stores information on the correlations of a quantum system with the minimum amount of information, its geometry becomes Riemannian geometry, and the equation of state of the original system is converted into the Einstein equations. The lab has also obtained a result constructing a classical black hole solution from a finite-temperature quantum system.
*Illustrative imageQuantum Many-Body Problems of Electrons
The lab studies electronic states such as superconductivity and magnetism as phenomena arising from many-body interactions among electrons. It has been developing theories and numerical algorithms that can incorporate entanglement and nonlocal excitations, and has addressed topics such as cuprate high-temperature superconductors and photoinduced phase transitions.
MembersFaculty
The Matsueda Lab consists of faculty members, academic researchers, a visiting associate professor, doctoral, master's, and undergraduate students, international research students, graduate research students, and undergraduate research students.As of 2026
- ProfessorHiroaki Matsueda
- Assistant ProfessorYusuke Masaki
- FRIS Assistant ProfessorBinho Le
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Quantum images ( )” National Institute of Standards and Technology / Public domain (cropped)
- Extracting Features of Physical Systems with Singular Value Decomposition: “SVD - Decomposição por valores singulares (singular value decomposition)” Diego Mariano / CC BY-SA 4.0 (cropped)
- Replacing Quantum Systems with Classical Spacetime: “Computer simulation of colliding black holes (ann16008a)” SXS Lensing / CC BY 4.0 (cropped)
- Quantum Many-Body Problems of Electrons: “Levitation of a magnet on top of a superconductor 2” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), Jeffrey Quilliam, LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Related lab (Shimizu Lab): “Superconducting Quantum Chip with Dispersive Background 3” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Kato (Toshiaki)-Okada Lab): “Carbon nanotube zigzag povray cropped” Carbon_nanotube_zigzag_povray.PNG: Arnero derivative work: Antony-22 (talk) / Public domain (cropped)
- Related lab (Image Information and Communication Engineering [Omachi-Miyazaki] Lab): “Image processing post otsus algorithm” Pikez33 / CC BY 1.0 (cropped)
- Related lab (Oogane-Nakano Lab): “Tchibo Electronic Puzzle - board-4451” Raimond Spekking / CC BY-SA 4.0 (cropped)
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