Phase-stable free-space optical lattices for trapped ions
Abstract
We demonstrate control of the absolute phase of an optical lattice with respect to a single trapped ion. The lattice is generated by off-resonant free-space laser beams, we actively stabilize its phase by measuring its ac-Stark shift on a trapped ion. The ion is localized within the standing wave to better than 2\% of its period. The locked lattice allows us to apply displacement operations via resonant optical forces with a controlled direction in phase space. Moreover, we observe the lattice-induced phase evolution of spin superposition states in order to analyze the relevant decoherence mechanisms. Finally, we employ lattice-induced phase shifts for inferring the variation of the ion position over 157~m range along the trap axis at accuracies of better than 6~nm.
Cite
@article{arxiv.1507.05207,
title = {Phase-stable free-space optical lattices for trapped ions},
author = {Christian Tomas Schmiegelow and Henning Kaufmann and Thomas Ruster and Jonas Schulz and Vidyut Kaushal and Max Hettrich and Ferdinand Schmidt-Kaler and Ulrich G. Poschinger},
journal= {arXiv preprint arXiv:1507.05207},
year = {2016}
}
Comments
5 pages, 4 figures