LAB LOGA page on LabLog, a review site (not the lab's official page)
Kobayashi Lab
Machine-translated · View original
A lab that looks inside materials with diamond quantum sensors.
AboutAbout the lab
Measuring with the ultimate precision, using the principles of quantum mechanics.
The Kobayashi Lab studies ultra-precise measurement based on the principles of quantum mechanics, known as quantum metrology.
At the center of this work is the NV (nitrogen-vacancy) center, a lattice defect that forms in diamond.
An NV center acts as an atomic-scale quantum sensor and can measure the magnetic field and temperature it senses with extremely high precision.
Using it, the lab works on quantum spin microscopy, which observes the magnetic and thermal behavior of materials like a microscope.
Key terms
- Quantum metrology
- A technique that uses the properties of quantum mechanics to measure with a precision beyond the reach of conventional methods
- NV center
- A lattice defect in diamond in which two adjacent carbon atoms are replaced by one nitrogen atom and one vacancy
- Mesoscopic system
- An artificial quantum system of intermediate size: not as small as an atom, yet not as large as macroscopic matter visible to the eye
NewsLab news
Paper: Visualizing the entry of quantum vortices into a superconducting device
Paper: Precise measurement of the spin coherence of hBN quantum sensors
Paper: Highly efficient fabrication of shallow diamond quantum sensors
Paper: Visualizing the motion of quantum vortices with a quantum sensor
Paper: Magnetic phase transition of iron under high pressure detected with a quantum sensor
ResearchResearch themes
Quantum mechanics makes possible ultra-precise measurements that were out of reach for earlier technologies, and opens up methods that get at the essence of matter. By combining quantum metrology with the physics of mesoscopic systems, which are nanoscale artificial quantum systems, the lab is opening up a new research area.
*Illustrative imageDevelopment of Quantum Spin Microscopes
Using NV centers as atomic-scale sensors, the lab observes the magnetic and thermal behavior of materials like a microscope. Its work includes imaging quantum vortices in superconductors, spin waves, and microwaves.
*Illustrative imageQuantum Control Using Spins
This research aims to manipulate the spins of electrons and atomic nuclei at will. Current work includes demonstrating the twisted Landau-Zener model, Floquet engineering, and improving the sensitivity of hBN quantum sensors.
*Illustrative imageQuantum Transport in Mesoscopic Systems
In nanoscale artificial quantum systems, the lab reads out many-body correlations from current fluctuations (shot noise). It has also worked on detecting fluctuations of spin currents and testing fluctuation theorems in quantum systems.
*Illustrative imageExploring the Properties of Materials
The lab investigates conduction phenomena that materials exhibit, such as the Kondo effect in quantum dots, nonlinear conduction caused by magnons in tunnel magnetoresistance devices, and the nonequilibrium magnetoresistance effect in silicon.
MembersFaculty
The members of the Kobayashi Lab are faculty and students in the doctoral and master's programs.As of 2026
- ProfessorKensuke KobayashiPublications ↗
- Assistant ProfessorKento SasakiPublications ↗
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
Students who take part in an interview may receive a thank-you gift worth ¥1,000, regardless of what they say.
On a 4-point scale, ● marks where students' answers fall
Who is this lab for?
What's great about this lab?
What did you learn after joining?
What's the vibe, and what is the professor like?
Where do graduates go?
RelatedLabs similar to Kobayashi Lab
Hayashi LabFaculty of Science, Department of PhysicsSpin currents, nonlinear optical effects, strongly coupled q…
Nakatsuji-Sakai LabFaculty of Science, Department of PhysicsTopological condensed matter physics, superconductivity, spi…
Katsura LabFaculty of Science, Department of PhysicsFundamental theory of quantum many-body systems, magnetism, …
Arita LabFaculty of Science, Department of PhysicsTheoretical prediction and design of exotic physical propert…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: “Irradiated spot of diamond with high concentration of nitrogen-vacancy centers” Lillian B. Hughes ほか
/ CC BY 4.0 (cropped) - Development of Quantum Spin Microscopes: “NV center in solid immersion lens” David A. Hopper, Henry J. Shulevitz, Lee C. Bassett / CC BY 4.0 (cropped)
- Quantum Control Using Spins: “GWM HahnEcho GreyBgd 1” Gavin W Morley / CC BY-SA 3.0 (cropped)
- Quantum Transport in Mesoscopic Systems: “Quantum metamaterial with 24 artificial atoms” FMNLab / CC BY 4.0 (cropped)
- Exploring the Properties of Materials: “Kscheme” Daniellcox at English Wikipedia / Public domain (cropped)
- Related lab (Hayashi Lab): “Optical elements and green laser beem” Dasha Butova / CC BY-SA 4.0 (cropped)
- Related lab (Nakatsuji-Sakai Lab): “FZU AV CR Silicon Single Crystal C” Mojmir Churavy / CC BY-SA 4.0 (cropped)
- Related lab (Katsura Lab): “Icosahedrite Diffraction Pattern” Paul Steinhardt / CC BY-SA 4.0 (cropped)
- Related lab (Arita Lab): “Magnetic levitation of a superconductor” Your stepbro sunset / CC BY 4.0 (cropped)
About LabLog
LabLog is a lab review app for students only. Student members at each university interview students in labs and publish what they say. Student voices can only be read by students who sign up with a university email address. Operated by bestiee Inc.
Learn more about LabLog ↗Search engines and AI may reference the basic lab info and rating summaries on this page and the description of LabLog. Student voices are for student members only. Automated collection by programs (scraping, or input to or training of AI) is prohibited under Article 8 of the Terms of Service. If you need data for research or analysis, please contact us.