ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarKyungtae KimYe Labs, JILA, NIST and University of Colorado, 
Department of Physics, University of Colorado, Boulder, CO (host: Vukics 
András)Strontium Optical Lattice Clock Experiments in JILAMonday, 16 
September 2024, 10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference 
RoomOptical 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)  Minden 
érdeklődőt szívesen látunk! - Everyone is welcome to attend.Attila 
Nagysem-admin AT szfki.hu