We develop laser-based ultrasensitive trace analysis methods.
By performing precision measurements on atoms, molecules, and nuclei,
we study fundamental problems in physics and chemistry,
and develop applications in the earth and environmental sciences.

Radiokrypton dating

Radioactive isotope tracers are natural clocks in the environment.

Helium Spectroscopy

The neutral helium atom, with only two electrons, can be theoretically understood to a high degree of precision.

Atmospheric Molecules

Detection of Atmospheric Species by Laser Spectroscopy.

Quantum Metrology

The development of high-precision quantum measurement method is the future direction of metrology.

Hydrogen molecules

Molecular hydrogen is subject to most physical phenomena relevant to the chemical binding in more complicated molecules.


An intrinsic electric dipole moment (EDM) of an atom signifies the violation of both parity (P) and time-reversal (T) symmetries.

Atomic devices

Atomic devices emerge from the combination of atomic spectroscopy with the miniaturization technology.

We are part of CAS Center for Excellence in Quantum Information and Quantum Physics
and University of Science and Technology of China (USTC).
We are supported by a number of national programs, and collaborate widely with the international community.