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Nakagawa Lab
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The lab builds hardware for quantum computers and AI using light-based technology.
AboutAbout the lab
Opening new possibilities for computing with photonics
The Nakagawa Lab conducts research to realize next-generation computers using light-based technology (photonics).
For quantum computers, the lab works on light sources that generate particles of light (photons) one by one at high speed, and on technology for manipulating ions with light.
For AI, the lab studies optical resonators as AI hardware that assists CPU computation.
The lab's motto is "Encouraging Failure": without fearing failure, it takes on problems that are important but difficult to achieve.
Key terms
- Photonics
- The science and technology of generating, manipulating, and using light
- Single photons
- Photons, the smallest units of light, extracted one at a time
- Reservoir computing
- A machine learning method that quickly learns from and analyzes time-varying data using only small amounts of data
NewsLab news
A paper by Assistant Professor Lin and colleagues was published in Physical Review Letters
A paper by Assistant Professor Lin and colleagues was published in Optica
ResearchResearch themes
The lab devotes its efforts to photonics for realizing next-generation computers, aiming to achieve quantum computers and AI hardware. It studies light sources and optical devices for quantum computers, and optical resonators for AI.
*Illustrative imageSingle-photon sources for quantum computers
For quantum computers that use photons as qubits, the lab studies light sources that use electric current to generate indistinguishable photons on demand at high speed. It also studies metalenses that couple light efficiently into optical fibers.
*Illustrative imageIntegrated optical devices for controlling ions
For trapped-ion quantum computers, which confine and use ions, the lab aims to build integrated photonic circuits that control the spread and polarization of the light directed at the ions. Techniques such as topological photonics are used.
*Illustrative imageOptical resonators for AI
This research performs reservoir computing, which can learn quickly from small amounts of data, using light. The lab studies active photonic resonators as AI hardware that assists CPU computation.
MembersFaculty
The Nakagawa Lab's members consist of faculty, doctoral, master's, and undergraduate students, and assistants.As of 2026
- ProfessorShigeru NakagawaPublications ↗
- Assistant ProfessorWenbo LinPublications ↗
VoicesStudent voices
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Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Nakagawa Lab
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Koyama LabSchool of Engineering, Department of Electrical and Electronic EngineeringPhotonic nanostructures, semiconductor lasers, and photonic …The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Mechanical delay stage in an optical setup 01” Aksy88 / CC BY-SA 4.0 (cropped)
- Single-photon sources for quantum computers: “Nanotechnology; Quantum Dots ( )” National Institute of Standards and Technology / Public domain (cropped)
- Integrated optical devices for controlling ions: “Ion Trap ( )” National Institute of Standards and Technology / Public domain (cropped)
- Optical resonators for AI: “Superconducting Metamaterial Chip” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Shoji Lab): “Optical patchcord” Sunmosk / CC BY 4.0 (cropped)
- Related lab (Kajikawa Lab): “Metamaterial 'Flat Lens' ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Haruhiko Ito Lab): “Cold atoms experiment 04” Tomasz Kawalec / CC BY-SA 4.0 (cropped)
- Related lab (Koyama Lab): “Laser table” Pawel Nowakowski / CC BY-SA 4.0 (cropped)
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