[17a-K209-1~8] 1.5 Instrumentation, measurement and Metrology

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[17a-K209-2] Evaluation of temperature of single ¹⁷⁴Yb⁺ ions by spectroscopy of the ²S_1/2 - ²D_5/2 clock transition

〇Seiryu Ando¹, Takahiro Enomoto², Yasutaka Imai³, Kazuhiko Sugiyama^1,2 (1.Kyoto Univ., 2.Grad Sch Kyoto Univ., 3.Okayama Univ.)

Keywords:

iontrap,Ytterbium ion,Optical clock

We are conducting research for realizing a single-ion optical clock using Yb+ ions. While we previously confirmed confinement within the Lamb-Dicke region for the ²S_1/2 - ²D_5/2 transition in the ¹⁷⁴Yb⁺ ions, issues of reproducibility remained. In this study, we utilize a newly developed ion trap to clarify the conditions required for reliably confining ions within the Lamb-Dicke region. At present, although confinement within the Lamb-Dicke region did not achieved, we observed a carrier-dominant spectrum with the ion’s temperature estimated to be in the 1 mK range.