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Electrical and Electronic Fundamentals Education Lab
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A lab made up of two groups, studying quanta of light and the radio waves around the Earth.
AboutAbout the lab
Reading quantum light and radio waves in the sky.
The lab consists of two groups: the Quantum Optical Information Group and the Radio Physics Group.
The Quantum Optical Information Group, as the joint lab of Morita and Kakue, re-examines the essence of light from both its particle nature and its wave nature, and explores technologies based on new principles.
The Radio Physics Group uses radio waves to observationally study the behavior of the ionosphere and the atmosphere.
In addition to its own observations using radio observation antennas placed in Japan and overseas, the group analyzes GPS and satellite data under international collaboration.
Key terms
- Ionosphere
- A layer high above the Earth where sunlight splits the atmosphere into ions and electrons. It affects how radio waves propagate.
- Holography
- A technology that records both the amplitude and phase of light and reproduces the original state of the light as it was.
- Orbital angular momentum
- The "rotational momentum" carried by light with a helical wavefront. It can be used as a degree of freedom separate from polarization.
NewsLab news
A master's student received the Excellent Poster Award at the Information Photonics Research Group workshop
A master's student received the Best Research Award at Spatial Media Conference 2025
A master's student received the Paper Presentation Encouragement Award at the 45th Annual Meeting of the Laser Society of Japan
An undergraduate student received the Excellent Presentation Award at the 19th Kanto Student Research Paper Conference
Research results by a master's student published in the journal Optics Express
ResearchResearch themes
The Quantum Optical Information Group re-examines the essence of light from the two standpoints of quantum optics and information optics, and aims to find new technologies from their fusion. The Radio Physics Group uses radio observations to uncover unknown phenomena, and their causes, occurring from the atmosphere out to the space around the Earth, particularly in the ionosphere.
*Illustrative imageQuantum teleportation of photons with spatial structure
The lab uses photons that have spatial and geometric structure, such as orbital angular momentum, rather than polarization alone. Going beyond conventional methods that handle only two states, it handles quantum states with many degrees of freedom, aiming at quantum information transfer with higher efficiency and functionality.
*Illustrative imageQuantum state conversion between photons and electron spins
The lab builds a mechanism for mapping the quantum state of light with spatial structure onto electron spins in semiconductors. By connecting the quantum states of light and matter, it aims at a foundational technology that unifies the storage, processing, and transmission of quantum information.
*Illustrative imageTime super-resolution holographic video imaging
Using holography, which exploits the wave nature of light, the lab realizes technology for capturing video faster than the performance of the high-speed camera itself. It also works on incoherent holography using LED light sources, not only laser sources, and envisions applications in a wide range of fields.
*Illustrative imageObserving the ionosphere with radio waves
The ionosphere is constantly varying, under influence from above, in the form of plasma arriving from the Sun, and from below, in the form of waves in the lower atmosphere caused by events such as earthquakes and typhoons. Finding unknown phenomena in this region and clarifying their causes is the foundation of the Radio Physics Group.
MembersFaculty
Members of the lab consist of faculty, technical specialists, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKen Morita
- Associate ProfessorTakashi Kakue
- Associate ProfessorHiroyuki Nakata
- Assistant ProfessorHiroyo Ohya
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: “US Navy 110419-N-HW977-353 Various optical components are aligned using eye-safe visible lasers” U.S. Navy photo by Greg Vojtko / Public domain (cropped)
- Quantum teleportation of photons with spatial structure: “Quantum images ( )” National Institute of Standards and Technology / Public domain (cropped)
- Quantum state conversion between photons and electron spins: “Lab Mol Colloidal quantum dots 01” Lab mol (Ilia Litvinov) / CC BY 4.0 (cropped)
- Time super-resolution holographic video imaging: “Visa Dove Hologram Rainbow” Dominic Alves / CC BY 2.0 (cropped)
- Observing the ionosphere with radio waves: “COSMIC-2 Cafeteria Cups Radio Occultation Antenna Array” Dmitry Turbiner / CC BY-SA 4.0 (cropped)
- Related lab (Josaphat Lab): “Sentinel 1-IMG 5874-white” Rama / CC BY-SA 2.0 fr (cropped)
- Related lab (Moriyoshi-Kuboyama Lab): “1998 cc Holden 20LE inline-four engine” OSX / Public domain (cropped)
- Related lab (Ryu Lab): “Holding Tanks ( )” Leslie Seaton from Seattle, WA, USA / CC BY 2.0 (cropped)
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