Toward a high-performance transportable microwave frequency standard based on sympathetically cooled 113Cd+ ions

JZ Han, HR Qin, NC Xin, YM Yu, VA Dzuba… - Applied Physics …, 2021 - pubs.aip.org
We report a high-performance transportable microwave frequency standard scheme based
on sympathetically cooled 113 Cd+ ions using 40 Ca+ as coolant ions. A transportable …

Precision determination of the ground-state hyperfine splitting of trapped 113Cd+ ions

SN Miao, JW Zhang, HR Qin, NC Xin, JZ Han… - Optics letters, 2021 - opg.optica.org
We measured the ground-state hyperfine splitting of trapped^ 113Cd^+ ions to be
15199862855.02799 (27) Hz with a fractional uncertainty of 1.8× 10^− 14. The ions were …

High accuracy measurement of the ground-state hyperfine splitting in a 113Cd+ microwave clock

K Miao, JW Zhang, XL Sun, SG Wang, AM Zhang… - Optics letters, 2015 - opg.optica.org
A microwave frequency standard based on laser-cooled Cd113^+ ions has been developed
in recent years, and the short-term frequency instability is measured to be 6.1× 10^− 13/τ. By …

Determination of the ground-state hyperfine splitting of trapped 171Yb+ ions

JZ Han, NC Xin, JW Zhang, YM Yu, JG Li… - Applied Physics …, 2024 - pubs.aip.org
We present the determination of the ground-state hyperfine splitting (⁠ ν HFS⁠) in laser-
cooled 171 Yb+ ions using our microwave quantum frequency standard (QFS). Employing …

Determination of hyperfine splittings and Landé factors of and states of for microwave frequency standards

JZ Han, R Si, HR Qin, NC Xin, YT Chen, SN Miao… - Physical Review A, 2022 - APS
Regarding microwave frequency standards based on trapped ions, we report on the
determination of the hyperfine splittings and the Landé g J factors of Cd+ 111, 113. The …

Relativistic coupled-cluster-theory analysis of energies, hyperfine-structure constants, and dipole polarizabilities of

CB Li, YM Yu, BK Sahoo - Physical Review A, 2018 - APS
Roles of electron correlation effects in the determination of attachment energies, magnetic-
dipole hyperfine-structure constants, and electric-dipole (E 1) matrix elements of the low …

A modified model of helical resonator with predictable loaded resonant frequency and Q-factor

K Deng, YL Sun, WH Yuan, ZT Xu, J Zhang… - Review of Scientific …, 2014 - pubs.aip.org
High voltage radio frequency (RF) supply is a critical part in an ion trapping system. The RF
supply should have high Q-factor and relatively high driving frequency. A frequently used RF …

High-accuracy measurement of the 113Cd+ ground-state hyperfine splitting at the milli-Hertz level

SG Wang, JW Zhang, K Miao, ZB Wang, LJ Wang - Optics express, 2013 - opg.optica.org
We have developed a microwave frequency standard based on the 15.2 GHz ground-stated
hyperfine transition of^ 113Cd^+ ions. Using a laser-cooled ion cloud trapped in a linear …

Ground-state factors of the and ions

YM Yu, BK Sahoo, BB Suo - Physical Review A, 2020 - APS
Accurate calculations of gj factors of the ground state of the Cd+, Yb+, and Hg+ ions are
presented by employing the normal order unrelaxed Λ-approach relativistic coupled-cluster …

Toward a transportable microwave frequency standard based on laser-cooled 113Cd+ ions

JW Zhang, SG Wang, K Miao, ZB Wang, LJ Wang - Applied Physics B, 2014 - Springer
A transportable microwave frequency standard based on laser-cooled 113 Cd+ ions is
introduced, and its working principle and potential performance are discussed. Based on the …