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In this paper, we report on development on an optical lattice clock using neutral mercury. Laser spectroscopy of the clock transition in fermionic isotope has been performed, which is an important step in this project.
We report the cooling and trapping of neutral mercury in a vacuum chamber using the 1S0 - 3P1 intercombination transition. We produce an atom cloud of a few million atoms with a trap loading time of 1.6 seconds. The atoms are prepared for the interrogation of the forbidden 1S0 - 3P0 intercombination transition, using an ultra-stable UV source referenced to a vertically mounted Fabry-Perot cavity.
We report recent experiments performed with our Sr optical lattice clock. With the fermionic isotope 87Sr, the clock accuracy approaches 10-15 using spin-polarized atoms. We also report the first accuracy evaluation of an optical lattice clock with bosonic atoms, here 88Sr.
We are investigating the possibilities of using neutral mercury as a new species to realize a highly accurate atomic clock using the non-perturbing dipole lattice trapping scheme. Typically, accuracy below 10-17 is targeted. This proceeding outlines some properties of neutral mercury which are relevant to an optical lattice clock. We also present our on-going work towards the realization of the mercury...
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