Atom trap assembly

This work describes the assembly and use of an apparatus for laser cooling and trapping of atomic strontium in a broad-transition magneto-optical trap and magnetic trap. An all-diode 461nm laser system is used to drive the main cooling transition, 1S0 → 1P1. The lifetimes, loading rates, and temperatures of the trapped atoms are characterized.

Apr 23, 20150 citations

Atom trap assembly

Photographer Darren Boyd

Published Jun 1, 2021• 0 citations

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We report on the realization of large assembled arrays of more than 300 single

^{87}\mathrm{Rb}

atoms trapped in optical tweezers in a cryogenic environment at $\ensuremath{\sim}4$ K. For arrays with

{N}_{\mathrm{a}}=324

atoms, the assembly process results in defect-free arrays in $\ensuremath{\sim}37%$ of the realizations. To achieve this high assembling efficiency, we equalize the loading probability of the traps within the array using a closed-loop optimization of the power of each optical tweezer, based on the analysis of the fluorescence time traces of atoms loaded in the traps.