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Photonic Quantum Information Engineering Lab
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The lab manipulates particles of light (photons) one at a time to turn the power of quantum mechanics into technology.
AboutAbout the lab
Turning the mysteries of the quantum world into seeds of new technology
The Photonic Quantum Information Engineering Lab (Takeuchi Lab) aims to pursue the mysterious properties of quantum systems and nurture the seeds of entirely new science and technology.
Quanta such as photons and electrons behave completely differently from classical particles.
If their quantum states can be fully controlled, quantum computers and quantum metrology that can reveal previously unobservable phenomena are expected to become possible.
The lab conducts research on quantum information science using photons.
Key terms
- Photon
- A particle of light. Light also behaves as a collection of these particles
- Quantum entanglement
- A phenomenon in which two or more quantum systems remain linked to each other even when far apart
- Single-photon source
- A light source from which photons can be extracted one at a time
NewsLab news
Paper on high-volume-resolution imaging with quantum optical coherence tomography published in Optics Express
Paper by Prof. Takeuchi and colleagues published in Optics Express
Paper by Prof. Takeuchi and colleagues published in ACS Photonics
Prof. Shigeki Takeuchi receives the FY2026 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Prize for Science and Technology (Research Category)
Prof. Takeuchi receives the FY2026 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology
ResearchResearch themes
As quantum information science using photons, the lab conducts research on photonic quantum information, nanophotonics, and photonic quantum metrology.
*Illustrative imageBuilding quantum computers with light
The lab aims to realize photonic quantum computers and photonic quantum simulators. It has built one of the world's largest photonic quantum circuits using quantum interference between photons, and is also advancing research on integrated photonic quantum circuits.
*Illustrative imageFreely emitting and capturing photons
Using nanotechnology devices, the lab aims to emit and capture photons at will from sources such as quantum dots and diamond particles. It has realized the brightest single-photon source in diamond and also aims to develop a photonic quantum memory.
*Illustrative imageMeasuring with quantum light
The lab studies how "quantum light," made by manipulating photons one by one, can dramatically improve the sensitivity and resolution of measurements. It has realized the world's first microscope that uses entangled light.
MembersFaculty
The faculty of the Photonic Quantum Information Engineering Lab are Professor Shigeki Takeuchi, Associate Professor Ryo Okamoto, Assistant Professor Yu Mukai, and Project Assistant Professor Toshiyuki Tashima.
- ProfessorShigeki Takeuchi
- Associate ProfessorRyo Okamoto
- Assistant ProfessorYu Mukai
- Program-Specific Assistant ProfessorToshiyuki Tashima
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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: “FMN Lab single photon detector” FMNLab / CC BY 4.0 (cropped)
- Building quantum computers with light: “FMN Lab electro-optical integrated modulator” FMNLab / CC BY 4.0 (cropped)
- Freely emitting and capturing photons: “Quantum Dots” Brandon CP BMED / CC BY-SA 3.0 (cropped)
- Measuring with quantum light: “Entangled Photon Generation for Liquid Crystal Qubits Image” Alexander202511 / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Electromagnetics Engineering Lab): “17jila003 3d strontium atomic clock” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Device Process Engineering Lab): “Unmetallised Silicon Heterojunction solar cell precursor” Radiotrefoil / CC BY-SA 4.0 (cropped)
- Related lab (Integrated Physics and Information Engineering Lab): “Photonic-crystal-fiber-from-NRL” 作者不詳 / Public domain (cropped)
- Related lab (Optical Functional Device Engineering Lab): “Blue led 09 of 10” Renato.pierri / CC BY-SA 4.0 (cropped)
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