Speaker
Sun Yool Park
(JILA)
Description
Using HfF+ molecular ions, the second generation of the JILA eEDM experiment recently reported the most precise measurement of the eEDM, de = (-1.3±2.0stat±0.6syst) x 10-30 e cm [1,2]. To improve upon this precision, the third generation of the experiment plans to utilize ThF+ whose eEDM sensitive state promises coherence times of ~20 s [3,4,5]. We are currently studying a prototype of the third-generation experiment at a reduced scale to demonstrate the suitability of the ThF+ molecule for precision metrology. In this talk, we present our progress towards the realization of long coherence time, including cryogenics designs, field homogeneity requirements, and improved state detection techniques.