4 research outputs found
Destabilization of dark states and optical spectroscopy in Zeeman-degenerate atomic systems
We present a general discussion of the techniques of destabilizing dark
states in laser-driven atoms with either a magnetic field or modulated laser
polarization. We show that the photon scattering rate is maximized at a
particular evolution rate of the dark state. We also find that the atomic
resonance curve is significantly broadened when the evolution rate is far from
this optimum value. These results are illustrated with detailed examples of
destabilizing dark states in some commonly-trapped ions and supported by
insights derived from numerical calculations and simple theoretical models.Comment: 14 pages, 10 figure
Resonance enhanced isotope-selective photoionization of YbI for ion trap loading
Neutral Ytterbium (YbI) and singly ionized Ytterbium (YbII) is widely used in
experiments in quantum optics, metrology and quantum information science. We
report on the investigation of isotope selective two-photoionisation of YbI
that allows for efficient loading of ion traps with YbII. Results are presented
on two-colour (399 nm and 369 nm) and single-colour (399 nm) photoionisation
and their efficiency is compared to electron impact ionisation. Nearly
deterministic loading of a desired number of YbII ions into a linear Paul trap
is demonstrated.Comment: 9 pages. Considerably extended and revised version including new dat