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Oiwa Lab
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A lab that explores quantum information processing using electron spins and photons.
AboutAbout the lab
Freely controlling light, electrons, and spin.
The Oiwa Lab (Quantum System Creation Group) studies new devices based on light, electrons, and spin.
Centered on semiconductors, the lab works on quantum information processing that uses the quantum mechanical properties of electron spins and photons.
Spintronics, which creates and combines new optical, electronic, and spin materials, is also a field of its research.
The lab carries out everything from the fabrication and characterization of high-quality materials to precise quantum transport measurements, and aims to discover new phenomena.
Key terms
- Quantum dot
- A tiny semiconductor region that traps electrons using a voltage applied to metal electrodes on the surface
- Spintronics
- A field that creates new functions by using not only the charge of electrons but also their property called spin
- Quantum repeater
- A technology required to transmit quantum information over long distances using photons
NewsLab news
Paper on automatic tuning of quantum dots published in Japanese Journal of Applied Physics
Paper on high-precision spin readout published in npj Quantum Information
Paper on accelerated adiabatic passage of a single electron spin published in Physical Review Letters
ResearchResearch themes
Centered on semiconductors, the lab studies quantum information processing that uses the quantum mechanical properties of electron spins and photons, as well as spintronics that combines new optical, electronic, and spin materials. It carries out everything from the fabrication and characterization of high-quality materials to precise quantum transport measurements, and aims to find new phenomena that arise from quantum nanostructures in which light, electrons, and spin can be freely controlled.
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MembersFaculty
The Oiwa Lab consists of faculty, project researchers, visiting faculty, project administrative staff, doctoral, master's, and undergraduate students, and special research students.As of 2026
- ProfessorAkira Oiwa
- Associate ProfessorTakafumi Fujita
- Assistant ProfessorRio Fukai
- Assistant ProfessorKotaro Taga
VoicesStudent voices
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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: “New Quantum Dot Transistor Counts Individual Photons ( )” National Institute of Standards and Technology / Public domain (cropped)
- Quantum interface between photons and electron spins: “Single Photons; Quantum Dots ( )” National Institute of Standards and Technology / Public domain (cropped)
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- Related lab (Advanced Electronic Devices Lab): “PlasticLogic flexible display” Steve Jurvetson / CC BY 2.0 (cropped)
- Related lab (Knowledge Science Lab (Komatani Lab)): “Arxiu audio” Jordi R. / CC BY 3.0 (cropped)
- Related lab (Interface Quantum Science Lab): “Magnetic Sensor ( )” National Institute of Standards and Technology / Public domain (cropped)
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