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arXiv · 1211.6647

Sympathetic EIT laser cooling of motional modes in an ion chain

Y. Lin·J. P. Gaebler·T. R. Tan·R. Bowler·J. D. Jost·D. Leibfried·D. J. Wineland
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Abstract

We use electromagnetically induced transparency (EIT) laser cooling to cool motional modes of a linear ion chain. As a demonstration, we apply EIT cooling on $^{24}Mg^+$ ions to cool the axial modes of a $^9Be^+$ - $^{24}Mg^+$ ion pair and a $^9Be^+$ - $^{24}Mg^+$ - $^{24}Mg^+$ - $^9Be^+$ ion chain, thereby sympathetically cooling the $^{9}$Be$^{+}$ ions. Compared to previous implementations of conventional Raman sideband cooling, we achieve approximately an order-of-magnitude reduction in the duration required to cool the modes to near the ground state and significant reduction in required laser intensity.

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Y. Lin, J. P. Gaebler, T. R. Tan, R. Bowler, J. D. Jost, D. Leibfried, D. J. Wineland. 2013-03-07. Sympathetic EIT laser cooling of motional modes in an ion chain. https://doi.org/10.1103/physrevlett.110.153002

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