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Abstract
We have quantified collisional losses, decoherence and the collision shift in a one-dimensional
optical lattice clock with bosonic 88Sr. The lattice clock is referenced to the highly
forbidden transition 1S0 - 3P0 at 698 nm, which becomes weakly allowed due to state
mixing in a homogeneous magnetic field. We were able to quantify three decoherence
coefficients, which are due to dephasing collisions, inelastic collisions between
atoms in the upper and lower clock state, and atoms in the upper clock state only.
Based on the measured coefficients, we determine the operation parameters at which
a 1D-lattice clock with 88Sr shows no degradation due to collisions on the relative
accuracy level of 10-16.