Quantum Metrology Research Group

The Quantum Metrology Research Group investigates technologies for precisely controlling quantum systems composed of light and atoms, and develops for measuring time, frequency, and gravitational potential with extreme precision. At the core of the group’s research are optical lattice clocks, which achieve ultra-stable and accurate timekeeping beyond conventional atomic clocks. They are expected to contribute not only to next-generation time standards but also to relativistic geodesy, in which differences in gravitational potential are measured through time and frequency. Our group is advancing optical lattice clocks by improving their accuracy, compactness, portability, and long-term operability, while also exploring new spectroscopic methods and developing key technologies toward nuclear clocks. Building on ultrahigh-precision time measurement, our group aims to open new frontiers in science and technology enabled by quantum metrology, from investigations of fundamental physics to future societal implementation.