2 citations · 2 across the 11 of their papers we have counts for
12 papers
Optimal state detection without likelihood estimation
M. D. K. Lee, Z. Chai, J. Z. F. Seng +2
We show that adaptive Bayesian estimation in fluorescence state detection reduces to a comparison of elapsed time with two arithmetic time sequences fixed by the bright and dark co…
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…
Zeeman Degenerate Sideband Cooling in Lu
Qin Qichen, Qi Zhao, M. D. K. Lee +4
We explore degenerate Raman sideband cooling in which neighboring Zeeman states of a fixed hyperfine level are coupled via a two-photon Raman transition. The degenerate coupling be…
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…