245 citations · 992 across the 21 of their papers we have counts for
17 papers · 1 filter
Isotopic effect on collisional widths and shifts of Hg clock transition induced by cold Rb atoms
Renu Bala, Adam Linek, Marcin Witkowski +4
We study the isotopic dependence of collisional widths and shifts of the Hg clock transition S-P perturbed by the Rb atoms in the temperature range from 1 nK to 1 K…
Engineering the sensitivity of macroscopic physical systems to variations in the fine-structure constant
Beata Zjawin, Marcin Bober, Roman Ciuryło +3
Experiments aimed at searching for variations in the fine-structure constant are based on spectroscopy of transitions in microscopic bound systems, such as atoms and ions, or r…
Photoionization cross sections of ultracold Sr in P and S states at 390 nm and the resulting blue-detuned magic wavelength optical lattice clock constraints
Marcin Witkowski, Sławomir Bilicki, Marcin Bober +4
We present the measurements of the photoionisation cross sections of the excited P and S states of ultracold Sr atoms at 389.889 nm wavelength, which is the…
Ultimate stability of active optical frequency standards
Georgy A. Kazakov, Swadheen Dubey, Anna Bychek +3
Active optical frequency standards provide interesting alternatives to their passive counterparts. Particularly, such a clock alone continuously generates highly-stable narrow-line…
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…
First observation with global network of optical atomic clocks aimed for a dark matter detection
P. Wcisło, P. Ablewski, K. Beloy +19
We report on the first earth-scale quantum sensor network based on optical atomic clocks aimed at dark matter (DM) detection. Exploiting differences in the susceptibilities to the…