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Mukaiyama Lab
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The lab explores the quantum world with atoms and ions cooled to extremely low temperatures by lasers.
AboutAbout the lab
The world woven by laser light, atoms, and ions
The Mukaiyama Lab uses ultracold atoms and ions produced by laser cooling to study quantum properties of matter and develop quantum technologies.
Using the force of laser light and electric fields, the lab traps atoms and ions in a vacuum and cools them to extremely low temperatures, close to absolute zero.
Beyond laser technology, experiments combine a variety of techniques, including vacuum technology, electronic circuits, and programming.
Key terms
- Laser cooling
- A technique that slows the motion of atoms and ions by shining laser light on them, cooling them to extremely low temperatures
- Ion trap
- A device that uses electric fields to confine electrically charged atoms (ions) at a fixed location in a vacuum
- Quantum sensing
- Measurement based on the principles of quantum mechanics. It aims for precision beyond conventional methods by using interference arising in superposition states
NewsLab news
A paper on the temperature dependence of the p-wave contact was published (Featured in Physics)
A paper on corrections for ion traps was published (Editor's pick)
A student received the Outstanding Student Presentation Award of the Physical Society of Japan
Assistant Professor Saito received the Young Scientist Award of the Physical Society of Japan
ResearchResearch themes
The lab traps atoms and ions in a vacuum with laser light and electric fields and creates ultracold states close to absolute zero. The research takes advantage of the fact that ultracold atoms show properties similar to various systems in nature, and that the quantum states of ions can be controlled precisely.
*Illustrative imageQuantum sensing of rotation with ions
Using ions trapped by the electric fields of an ion trap as matter waves, the lab is pursuing the possibility of measuring the rotation of a device from their interference. If realized, gyroscopes are expected to become smaller and more precise.
*Illustrative imageExploring the mechanism of superconductivity with cold atoms
The lab uses gases of atoms cooled to extremely low temperatures to study p-wave superconductivity, a superconducting state with a special symmetry. The aim is to clarify the microscopic mechanism by which superconductivity emerges.
*Illustrative imageChemical reactions at space-like low temperatures
The lab mixes ultracold atoms and ions and studies in detail the chemical reactions that occur in low-temperature environments. It believes this will lead to understanding the origin of molecules in cold environments such as outer space.
MembersFaculty
The members of the Mukaiyama Lab are faculty and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakashi MukaiyamaPublications ↗
- Assistant ProfessorRyoichi SaitoPublications ↗
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: “Cold atoms experiment 03” Tomasz Kawalec / CC BY-SA 4.0 (cropped)
- Quantum sensing of rotation with ions: “Ion Trap ( )” National Institute of Standards and Technology / Public domain (cropped)
- Exploring the mechanism of superconductivity with cold atoms: “Cold atoms experiment 02” Tomasz Kawalec / CC BY-SA 4.0 (cropped)
- Chemical reactions at space-like low temperatures: “Rho Ophiuchi” NASA/JPL-Caltech/WISE Team / Public domain (cropped)
- Related lab (上妻研究室): “Cloud of ultracold atoms levitated in a magneto-optical trap” Balping / 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 (大関研究室): “Free-Energy-Landscape-Closeup” Tyler Savitski / CC BY-SA 4.0 (cropped)
- Related lab (堀内研究室): “Details of Supernova Remnant Cassiopeia A (opo0215d)” NASA/ESA and the Hubble Heritage Team (STScI/AURA) / Public domain (cropped)
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