Prospect for Precision Measurement of the Yb2+ 1S0 Transition Frequency

N Kimura, M Kajita - Journal of the Physical Society of Japan, 2021 - journals.jps.jp
N Kimura, M Kajita
Journal of the Physical Society of Japan, 2021journals.jps.jp
We discuss prospects of precision measurement of the Yb2+ 4 f 14 1S0–4 f 13 5 d transition
frequency (1.4× 1015 Hz). Attainable uncertainty of this precision measurement is
theoretically estimated. This transition is free from the electric quadrupole shift, and this
specific property allows for precision spectroscopy using a multi-ion string Coulomb crystal
and contributes to reduction of the statistical uncertainty. A systematic uncertainty of the
order 10− 18 is attainable because the Stark and Zeeman shifts are small due to the intrinsic …
We discuss prospects of precision measurement of the Yb2+ 4f14 1S0–4f13 5d transition frequency (1.4 × 1015 Hz). Attainable uncertainty of this precision measurement is theoretically estimated. This transition is free from the electric quadrupole shift, and this specific property allows for precision spectroscopy using a multi-ion string Coulomb crystal and contributes to reduction of the statistical uncertainty. A systematic uncertainty of the order 10−18 is attainable because the Stark and Zeeman shifts are small due to the intrinsic level structure of multiply charged ions. This clock transition can be monitored without quantum logical methods by observing the laser-induced fluorescence from the 1S0 transition with a closed optical cycle.
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