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|Author(s):||Andrew D. Ludlow; Nathan D. Lemke; Jeffrey A. Sherman; Christopher W. Oates; G. Quemener; J. von Stecher; A.M. Rey;|
|Title:||Cold-collision-shift cancelation and inelastic scattering in a Yb optical lattice clock|
|Published:||November 28, 2011|
|Abstract:||Recently, ρ-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 5 × 10-18 fractional frequency level. We report inelastic two-body loss rates for 3P0-3P0 and 1S0 -3P 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.|
|Citation:||Physical Review A|
|Pages:||pp. 052724-1 - 052724-5|
|Keywords:||cold collision,collision shift,inelastic scatter,optical lattice clock,p-wave collision,two-body loss,ytterbium|