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Cavity QED experimental results demonstrating collective strong coupling between ensembles of atomic ions cooled into Coulomb crystals and optical cavity fields have been achieved. Collective Zeeman coherence times of milliseconds have furthermore been obtained.
The authors present an all-optical technique for loading ion traps that has a number of advantages over conventional thermal atom sources. In our experiment a pulsed Nd:YAG laser at 1064 nm, with pulse energies up to 80 muJ and pulse durations in the region of 30 ns, is incident on a calcium metal surface. This generates a pulsed beam of atomic calcium from the metal surface. The atoms are subsequently...
An experimental demonstration of a novel all-optical technique for loading ion traps, which has particular application to microtrap architectures, is presented. The technique is based on photoionisation of an atomic beam created by pulsed laser ablation of a calcium target, and provides improved temporal control compared to traditional trap loading methods. Ion loading rates as high as 125 ions per...
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