speaker: Kyungtae Kim (Ye Labs, JILA, NIST and University of Colorado, Department of Physics, University of Colorado, Boulder, CO, host: Vukics András)
Title: Strontium Optical Lattice Clock Experiments in JILA
Date: Monday, 16 September 2024,10:00
Place: KFKI Campus, Bldg. 1, Conference room
Abstract:
Optical clocks have become the most precise timekeepers available. Continuing its development, now we are claiming fractional uncertainties below 10-18 (1) with our Strontium optical lattice clock. Through differential clock comparisons, we can achieve even greater resolution, enabling the detection of frequency shifts caused by gravitational redshifts on the scale of just 1 mm (2). This advancement is driven by understanding and control of light-matter interaction and the integration of cutting-edge laser technologies based on cryogenic silicon crystal cavity. In this talk, we discuss the science behind the strontium optical lattice clock, focusing on quantum state engineering, the interplay of many-body physics, and their implications for metrology. Additionally, we will introduce our recent work on direct excitation of nuclear isomer states (3).
(1) A. Aeppli et al., Phys. Rev. Lett. **133**, 023401 (2024)
(2) T. Bothwell et al., Nature **602**, 420 (2022)
(3) C. Zhang et al., arXiv:2406.18719 (2024)
