Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
- URL: http://arxiv.org/abs/2006.15104v2
- Date: Wed, 26 Aug 2020 13:22:39 GMT
- Title: Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
- Authors: M. K. Joshi, A. Fabre, C. Maier, T. Brydges, D. Kiesenhofer, H.
Hainzer, R. Blatt, C. F. Roos
- Abstract summary: We present experiments on polarization gradient cooling of Ca$+$ multi-ion Coulomb crystals in a linear Paul trap.
We demonstrate cooling of linear chains of up to 51 ions and 2D-crystals in zig-zag configuration with 22 ions.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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$_{1/2}$ to P$_{1/2}$ 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.
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