2 citations · 2 across the 11 of their papers we have counts for
10 papers · 1 filter
Measurement of the reduced dipole matrix element in Ba
N. Jayjong, M. D. K. Lee, K. J. Arnold +1
We present a high-precision measurement of the reduced electric-dipole matrix element in . By comparing off-resonant scatt…
Absolute frequency measurement of a Lu standard against the NRC-FCs2 fountain with uncertainty
K. J. Arnold, Bin Jian, Zhao Zhang +6
We report an improved absolute frequency measurement of the Lu optical frequency standard, evaluated via a remote link to the NRC-FCs2 caesium fount…
Zero crossings of the differential scalar polarizability of Ba clock transition
N Jayjong, M D K Lee, K J Arnold +1
The differential scalar polarizability of the Ba S-to-D clock transition has a zero crossing near 481nm, which is measured to be 623.603\,13(17)\,THz.…
Lu optical frequency references with accuracy verified at the 19th digit
K. J. Arnold, M. D. K. Lee, Zhao Qi +4
We report a comprehensive evaluation of all known sources of systematic uncertainty for two independent Lu single-ion optical references, finding total systematic uncer…
Analysis of collision shift assessments in ion-based clocks
M. D. Barrett, K. J. Arnold
We consider back-ground gas collision shifts in ion-based clocks. We give both a classical and quantum description of a collision between an ion and a polarizable particle with a s…
Precision measurement of the microwave clock transitions
M. D. K. Lee, Qi Zhao, Qin Qichen +4
We report precision measurement of the unperturbed microwave transition frequencies in to a fractional uncertainty of . We find t…
Absolute frequency measurement of a Lu optical frequency standard via link to international atomic time
Zhao Zhang, Qi Zhao, Qin Qichen +4
We report on an absolute frequency measurement of the standard frequency which is defined as the hyperfine-average of to o…
An extrapolation method for polarizability assessments of ion-based optical clocks
K. J. Arnold, M. D. Barrett
We present a numerical method for extrapolating polarizability measurements to dc as done in the assessment of blackbody radiation shifts for ion-based clocks. The method explicitl…
Validating a lutetium frequency reference
Kyle J. Arnold, Scott Bustabad, Qin Qichen +3
We review our progress in developing a frequency reference with singly ionized lutetium and give estimates of the levels of inaccuracy we expect to achieve in the near future with…
Enhanced micromotion compensation using a phase modulated light field
K. J. Arnold, N. Jayjong, M. L. D. Kang +4
We investigate sideband spectroscopy of a trapped ion using a probe laser phase modulated at the trap drive frequency. The enhanced sensitivity of our technique over traditional si…