Cold collision shift cancelation and inelastic scattering in a Yb optical lattice clock
Atomic Physics
2011-12-14 v2 Optics
Abstract
Recently, p-wave cold collisions were shown to dominate the density-dependent shift of the clock transition frequency in a 171Yb optical lattice clock. Here we demonstrate that by operating such a system at the proper excitation fraction, the cold collision shift is canceled below the 5x10^{-18} fractional frequency level. We report inelastic two-body loss rates for 3P0-3P0 and 1S0-3P0 scattering. We also measure interaction shifts in an unpolarized atomic sample. Collision measurements for this spin-1/2 171Yb system are relevant for high performance optical clocks as well as strongly-interacting systems for quantum information and quantum simulation applications.
Keywords
Cite
@article{arxiv.1108.1379,
title = {Cold collision shift cancelation and inelastic scattering in a Yb optical lattice clock},
author = {A. D. Ludlow and N. D. Lemke and J. A. Sherman and C. W. Oates and G. Quemener and J. von Stecher and A. M. Rey},
journal= {arXiv preprint arXiv:1108.1379},
year = {2011}
}