Laser-driven Mössbauer spectroscopy for nuclear clock

²²⁹Thorium-doped crystals offer a unique opportunity to scale up the size of quantum systems with intrinsically long coherence times, opening the door for high performance nuclear clocks for fundamental physics explorations. The combination of ultrafast optics and precision metrology has built us new tools such as a vacuum ultraviolet frequency comb, enabling the recent breakthrough of quantum-state-resolved laser spectroscopy of this nuclear clock system. I will present some latest progress in this system, including frequency reproducibility, linewidth broadening, and new spectroscopy probes. This unification of precision metrology and nuclear physics sparks new ideas for testing fundamental physics.