Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
Quantum Physics
2020-10-12 v2 Atomic Physics
Abstract
We present experiments on polarization gradient cooling of Ca multi-ion Coulomb crystals in a linear Paul trap. Polarization gradient cooling of the collective modes of motion whose eigenvectors have overlap with the symmetry axis of the trap is achieved by two counter-propagating laser beams with mutually orthogonal linear polarizations that are blue-detuned from the S to P transition. We demonstrate cooling of linear chains of up to 51 ions and 2D-crystals in zig-zag configuration with 22 ions. The cooling results are compared with numerical simulations and the predictions of a simple model of cooling in a moving polarization gradient.
Keywords
Cite
@article{arxiv.2006.15104,
title = {Polarization-gradient cooling of 1D and 2D ion Coulomb crystals},
author = {M. K. Joshi and A. Fabre and C. Maier and T. Brydges and D. Kiesenhofer and H. Hainzer and R. Blatt and C. F. Roos},
journal= {arXiv preprint arXiv:2006.15104},
year = {2020}
}