Precision spectroscopy with two correlated atoms

By M. Chwalla, Kihwan Kim, Thomas Monz, Philipp Schindler, M. Riebe, C. F. Roos, R. Blatt. 2007

185 citations recorded by the source corpus.

We discuss techniques that allow for long coherence times in laser spectroscopy experiments with two trapped ions. We show that for this purpose not only entangled ions prepared in decoherence-free subspaces can be used but also a pair of ions that are not entangled but subject to the same kind of phase noise. We apply this technique to a measurement of the electric quadrupole moment of the 3d2D5/2 state of 40Ca+ and to a measurement of the line width of an ultra-stable laser exciting a pair of 40Ca+ ions.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/da0795102e17b183ebb1920fd9aa372aba9a5043

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In Atomic and Molecular Physics, and Optics

1. Kai Bongs
2. Klaus Sengstock

Citations in the corpus

• Physics with coherent matter waves (2004, background): “The proximity of a room temperature surface in the miniaturised atom chip setups introduces new heating effects, which were proposed by [194, 195, 198, 202] and also recently investigated in several experiments [199, 200, 201].”
• Highly charged ions: Optical clocks and applications in fundamental physics (2018, unknown): “Examples are decoherence-free subspaces (Pruttivarasin et al., 2015; Roos et al., 2006) or other correlation-based measurement schemes (Chwalla et al., 2007).”