36 citations · 78 across the 5 of their papers we have counts for
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A strontium optical lattice clock with uncertainty and measurement of its absolute frequency
Richard Hobson, William Bowden, Alissa Silva +5
We present a measurement of the absolute frequency of the 5s S to 5s5p P transition in Sr, which is a secondary representation of the SI second. We descr…
A pyramid MOT with integrated optical cavities as a cold atom platform for an optical lattice clock
William Bowden, Richard Hobson, Ian R. Hill +6
We realize a two-stage, hexagonal pyramid magneto-optical trap (MOT) with strontium, and demonstrate loading of cold atoms into cavity-enhanced 1D and 2D optical lattice traps, all…
Guidelines for developing optical clocks with fractional frequency uncertainty
Moustafa Abdel-Hafiz, Piotr Ablewski, Ali Al-Masoudi +42
There has been tremendous progress in the performance of optical frequency standards since the first proposals to carry out precision spectroscopy on trapped, single ions in the 19…
Absolute frequency measurement of the SF optical clock transition in Yb with an uncertainty of using a frequency link to International Atomic Time
Charles F. A. Baynham, Rachel M. Godun, Jonathan M. Jones +8
The highly forbidden SF electric octupole transition in Yb is a potential candidate for a redefinition of the SI second. We present a…
Frequency comparison of Yb ion optical clocks at PTB and NPL via GPS PPP
J. Leute, N. Huntemann, B. Lipphardt +11
We used Precise Point Positioning, a well-established GPS carrier-phase frequency transfer method to perform a direct remote comparison of two optical frequency standards based on…