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arXiv · 1903.06435

Fast and dense magneto-optical traps for Strontium

S. Snigirev·A. J. Park·A. Heinz·I. Bloch·S. Blatt
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Abstract

We improve the efficiency of sawtooth-wave-adiabatic-passage (SWAP) cooling for strontium atoms in three dimensions and combine it with standard narrow-line laser cooling. With this technique, we create strontium magneto-optical traps with $6\times 10^7$ bosonic $^{88}$Sr ($1\times 10^7$ fermionic $^{87}$Sr) atoms at phase-space densities of $2\times 10^{-3}$ ($1.4\times 10^{-4}$). Our method is simple to implement and is faster and more robust than traditional cooling methods.

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S. Snigirev, A. J. Park, A. Heinz, I. Bloch, S. Blatt. 2019-03-15. Fast and dense magneto-optical traps for Strontium. https://doi.org/10.1103/physreva.99.063421

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