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Kozuma Lab
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A lab that studies quantum gases and quantum navigation using atoms cooled with lasers.
AboutAbout the lab
Doing it all by hand, from lasers to apparatus
The Kozuma Lab studies both fundamental physics and applications, using atoms that are cooled and manipulated with lasers.
In its curiosity-driven research, the lab investigates how a gas of atoms that behave as magnets behaves in the quantum world.
In its research responding to societal needs, the lab is developing, jointly with companies, a device that uses the wave nature of atoms to determine position even where GPS is unavailable.
Members carry everything forward themselves, from building lasers and designing circuits to operating the apparatus.
Key terms
- Bose-Einstein condensation
- A state in which, at very low temperatures, many atoms behave in unison like a single wave
- de Broglie wave
- The wave-like nature of particles such as atoms. Like light, they produce interference
- inertial navigation
- A method that continuously measures acceleration and rotation rate to determine one's own position without relying on external signals
NewsLab news
A proposal for a quantum inertial sensor was published in Physical Review Applied
A master's student received the Physics Program Outstanding Master's Thesis Award
Observation of the Einstein-de Haas effect in an atomic gas was published in Science
A paper on a Yb atomic beam was published in Physical Review Research
A paper on an atomic beam gyroscope was published in Physical Review Applied
ResearchResearch themes
The lab clearly distinguishes between research that seeks a deep understanding of nature out of pure curiosity and research that responds to societal needs, and pursues both. Using laser-cooled atoms, it works to elucidate the properties of magnetic atomic gases and to develop quantum navigation devices that use the de Broglie waves of atoms.
*Illustrative imageCooling atoms with lasers
Laser light is shone on atoms to slow them down, cooling a gas of atoms in a vacuum. The atoms are then confined with light and cooled further, creating states in which quantum properties become apparent.
*Illustrative imageMagnetic quantum gases
The lab achieved the world's first laser cooling and Bose-Einstein condensation of europium atoms. Using this system, it explores new properties of magnetic quantum gases.
*Illustrative imageRealizing quantum navigation devices
This research uses the de Broglie waves of atoms to build high-performance gyroscopes and greatly improve the accuracy of inertial navigation systems. The lab has realized a compact, portable quantum gyroscope.
MembersFaculty
The members of the Kozuma Lab consist of faculty, project specialists, researchers, secretaries, executive managers, corporate researchers, and master's and undergraduate students.As of 2026
- ProfessorMikio KozumaPublications ↗
- Project Associate ProfessorTomoya SatoPublications ↗
- Project Associate ProfessorNobuyuki TakeiPublications ↗
- Project Associate ProfessorMartin Miranda
- Project Assistant ProfessorYuki Miyazawa
- Project Assistant ProfessorHiroki Matsui
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: “Cloud of ultracold atoms levitated in a magneto-optical trap” Balping / CC BY-SA 4.0 (cropped)
- Cooling atoms with lasers: “Laser used to cool atoms with light” Noahlw / CC BY 4.0 (cropped)
- Magnetic quantum gases: “Bose Einstein condensate” NIST/JILA/CU-Boulder / Public domain (cropped)
- Realizing quantum navigation devices: “Laserkreisel” Stahlkocher / CC BY-SA 3.0 (cropped)
- Related lab (向山研究室): “Cold atoms experiment 03” Tomasz Kawalec / CC BY-SA 4.0 (cropped)
- Related lab (西田研究室): “Bose-Einstein Condensate ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (山口研究室): “WMAP 2012” NASA / WMAP Science Team / Public domain (cropped)
- Related lab (賀川研究室): “Meissner effect p1390048” Mai-Linh Doan / CC BY-SA 3.0 (cropped)
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