Multi-reference ab initio calculations of Hg spectral data and analysis of magic and zero-magic wavelengths.

We have identified magic wavelengths for S ↔ P (m = 0) transitions and zero-magic wavelengths for the P (m = 0) states of Hg atoms, analysed the robustness of the magic conditions with respect to wavelength and polarization imperfections. We show that the most experimentally feasible magic wavelength for the S ↔ P transition is 351.8 nm of π polarized light.

Characterisation and feasibility study for superradiant lasing in Ca atoms.

Superradiant active clocks operating on narrow linewidth clock transitions are predicted to achieve precision orders of magnitude higher than any currently existing optical atomic clocks. We introduce a theory of superradiant lasing and implement it for the example of Ca atoms. The presented model, however, is valid for any two- or three-level system in an optical lattice.