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Quantum Condensed Matter Lab
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A research division that uses computers to uncover the properties of materials from the standpoint of quantum mechanics.
AboutAbout the lab
Solving the Schrödinger equation to understand materials.
The Division of Quantum Condensed Matter uses large-scale computers to study a wide range of materials with different properties, including superconductors, insulators, and metals.
By solving the Schrödinger equation, the fundamental equation of the microscopic world, the division explains and predicts the properties of materials and designs new materials with novel properties.
The division treats materials as quantum many-body systems bound by Coulomb interactions, aiming to obtain knowledge that will underpin next-generation technologies.
The division's page has links to the Yabana Group, Koizumi Lab, Tong Lab, and Hino-Maeshima Lab.
Key terms
- First-principles calculation
- A method of calculating the properties of materials on computers, starting from the fundamental equations of quantum mechanics such as the Schrödinger equation
- Time-dependent density functional theory
- One of the first-principles calculation methods, which calculates how electrons move over time when light is applied
- Strongly correlated materials
- Materials in which correlations between electrons are strong. They show various properties that cannot be understood with band theory
ResearchResearch themes
The division treats a wide range of materials as quantum many-body systems bound by Coulomb interactions and solves the quantum-mechanical equations of motion on computers. Through explaining the various properties of materials and searching for new materials with novel functions, it aims to obtain knowledge that will underpin next-generation technologies.
*Illustrative imageLight-Matter Interaction
In recent optical science, intense and extremely short light pulses are used to measure the ultrafast motion of electrons in real time and to control that motion. The division works to clarify light-matter interaction using first-principles calculations, including time-dependent density functional theory.
*Illustrative imageDevelopment of Simulation Methods for Optical Science
To describe light-matter interaction from the microscopic motion of electrons, the division develops SALMON, a first-principles calculation code based on real-space, real-time density functional theory. The work is carried out as open source, in collaboration with computer scientists and researchers outside the center.
*Illustrative imageStrongly Correlated Materials and Topological Materials
The division develops computational methods for electronic states, phase transitions, and optical responses in materials with strong electron correlations and in topological materials, whose properties reflect their geometry. It also conducts research related to applications in quantum information devices.
MembersFaculty
The members of the Division of Quantum Condensed Matter are faculty members, researchers (including part-time researchers), and visiting professors.
- ProfessorMinoru Otani
- Associate ProfessorHiroyasu Koizumi
- Associate ProfessorXiaomin Tong
- LecturerNobuya Maeshima
- Assistant ProfessorSatoshi Hagiwara
- Assistant ProfessorAi Koizumi
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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: “Sun Microsystems Solaris computer cluster” ChrisDag / CC BY 2.0 (cropped)
- Light-Matter Interaction: “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
- Development of Simulation Methods for Optical Science: “The catalyst high performance computing (HPC)” ENERGY.GOV / Public domain (cropped)
- Strongly Correlated Materials and Topological Materials: “Bismuth crystal macro” Dschwen / CC BY 2.5 (cropped)
- Related lab (Astrophysics Lab): “Center of the Milky Way Galaxy IV – Composite” NASA/JPL-Caltech/ESA/CXC/STScI / Public domain (cropped)
- Related lab (Nuclear Physics Lab): “Institute of nuclear and particle physics 00048 REP SDR-81 (0717)” DimitrisSideridis / CC BY-SA 4.0 (cropped)
- Related lab (Particle Physics Lab): “Last photograph from the Saclay Bubble Chamber” CERN / CC BY 4.0 (cropped)
- Related lab (Life Functions and Information Lab): “CSIRO ScienceImage 1349 Protein crystals” Health Science and Nutrition, CSIRO / CC BY 3.0 (cropped)
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