Reversing Hydride Ion Formation in Quantum Information Experiments with Be$^+$
Atomic Physics
2015-01-13 v2 Atomic and Molecular Clusters
Quantum Physics
Abstract
We demonstrate photodissociation of BeH ions within a Coulomb crystal of thousands of Be ions confined in a Penning trap. Because BeH ions are created via exothermic reactions between trapped, laser-cooled Be() and background H within the vacuum chamber, they represent a major contaminant species responsible for infidelities in large-scale trapped-ion quantum information experiments. The rotational-state-insensitive dissociation scheme described here makes use of 157 nm photons to produce Be and H as products, thereby restoring Be ions without the need for reloading. This technique facilitates longer experiment runtimes at a given background H pressure, and may be adapted for removal of MgH and AlH impurities.
Keywords
Cite
@article{arxiv.1412.0634,
title = {Reversing Hydride Ion Formation in Quantum Information Experiments with Be$^+$},
author = {Brian C. Sawyer and Justin G. Bohnet and Joseph W. Britton and John J. Bollinger},
journal= {arXiv preprint arXiv:1412.0634},
year = {2015}
}
Comments
6 pages, 3 figures