C. Holliman

activity

20192025

most citedRadium Ion Optical Clock

33 citations · 73 across the 3 of their papers we have counts for

collaborators

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9 papers · 1 filter

physics.atom-ph2025

Lifetimes of the Metastable $6 d^{2} D_{5/2}$ and $6 d^{2} D_{3/2}$ States of Ra $^{+}$

Haoran Li, Huaxu Dan, Mingyu Fan +9

We report lifetime measurements of the metastable $6 d^{2} D_{5/2}$ and $6 d^{2} D_{3/2}$ states of Ra $^{+}$ . The measured lifetimes, $τ_{5} =$ …

physics.atom-ph2024

Laser Cooling and Hyperfine Measurements of Radium-225 Ions

Roy Ready, Haoran Li, Spencer Kofford +10

$^{225}$ Ra $^{+}$ ions (nuclear spin $I = 1/2$ ) have transitions that are first-order insensitive to magnetic field noise, which is advantageous for optical clocks and quantum informati…

physics.atom-ph2023

Laser cooling and trapping of $^{224}$ Ra $^{+}$

M. Fan, Roy A. Ready, H. Li +7

We report laser cooling and trapping of $^{224}$ Ra $^{+}$ ions. This was realized via two-step photoionization loading of radium into an ion trap. A robust source for $^{224}$ Ra atoms…

physics.atom-ph2022★ 33 cited

Radium Ion Optical Clock

C. A. Holliman, M. Fan, A. Contractor +2

We report the first operation of a Ra $^{+}$ optical clock, a promising high-performance clock candidate. The clock uses a single trapped $^{226}$ Ra $^{+}$ ion and operates on the $7…

physics.atom-ph2020

Direct measurement of the $7 s^{2} S_{1/2} \to$ $7 p^{2} P_{3/2}$ transition frequency in $^{226}$ Ra $^{+}$

C. A. Holliman, M. Fan, A. Contractor +2

We report a direct measurement of the $7 s^{2} S_{1/2} \to$ $7 p^{2} P_{3/2}$ electric dipole transition frequency in $^{226}$ Ra $^{+}$ . With a single laser-cooled radium ion we…

physics.atom-ph2020

Optical Mass Spectrometry of Cold $RaOH^{+}$ and $RaOCH_{3}^{+}$

M. Fan, C. A. Holliman, X. Shi +5

We present an all-optical mass spectrometry technique to identify trapped ions. The new method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub-dalto…

Lifetimes of the Metastable 6d2D5/2​ and 6d2D3/2​ States of Ra+

Laser Cooling and Hyperfine Measurements of Radium-225 Ions

Laser cooling and trapping of 224Ra+

Radium Ion Optical Clock

Direct measurement of the 7s 2S1/2​→ 7p 2P3/2​ transition frequency in 226Ra+

Optical Mass Spectrometry of Cold RaOH+ and RaOCH3​+

Lifetimes of the Metastable $6 d^{2} D_{5/2}$ and $6 d^{2} D_{3/2}$ States of Ra $^{+}$

Laser cooling and trapping of $^{224}$ Ra $^{+}$

Direct measurement of the $7 s^{2} S_{1/2} \to$ $7 p^{2} P_{3/2}$ transition frequency in $^{226}$ Ra $^{+}$

Optical Mass Spectrometry of Cold $RaOH^{+}$ and $RaOCH_{3}^{+}$