What is Optical Lattice Clock?
Professor Katori dedicated 13 years to inventing a high-precision optical lattice clock that deviates by no more than one second over 10 billion years. But what does it mean to confine a million atoms in an “egg carton”? This groundbreaking clock is now the leading candidate for the next-generation redefinition of the second.
An Experiment at TOKYO SKY TREE
Did we succeed in proving Einstein's theory of relativity at TOKYO SKYTREE? Is it true that time moves faster at the 450-meter-high observation deck than at ground level?
Discover the results of our 2020 experiment conducted at TOKYO SKYTREE!
Achieving a Compact Design
We have successfully developed a transportable optical lattice clock model with a volume of just 250 liters—one-quarter the size of its predecessor. This compact and robust optical lattice clock is anticipated to expand its applications beyond traditional timekeeping. Potential uses include advanced scientific research and practical fields such as relativistic geodesy.
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The Latest News
- Student Presentation Award has been awarded to our three members!JP Mr. Koki NISHIDA (D2), Mr. Hikaru KAWABATA (M2) and … 続きを読む: Student Presentation Award has been awarded to our three members!
- Prof. Katori gave a talk at BIPM's 150th anniversary event in FranceJP The celebrations of the 150th anniversary of the Met… 続きを読む: Prof. Katori gave a talk at BIPM's 150th anniversary event in France
- New members 2025/04/22Five new members have joined our lab: We are pleased to… 続きを読む: New members 2025/04/22
- Website RenewalWe are pleased to inform you that our laboratory websit… 続きを読む: Website Renewal
- Introduction to Quantum Research at RIKEN in ACS NanoThe article to introduce RIKEN's research on quantum ma… 続きを読む: Introduction to Quantum Research at RIKEN in ACS Nano
The World's 1st ：250-Liter Optical Lattice Clock
We have successfully developed the world's first transportable optical lattice clock with a compact volume of just 250 liters—one-quarter the size of its predecessor.
This downsized optical lattice clock is easy to relocate, enabling its application in relativistic sensing based on general relativity across various installation environments.