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Laser cooling with electromagnetically induced transparency: Application to trapped samples of ions or neutral atoms

F. Schmidt-Kaler·J. Eschner·G. Morigi·C. F. Roos·D. Leibfried·A. Mundt·R. Blatt
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Abstract

A novel method of ground state laser cooling of trapped atoms utilizes the absorption profile of a three (or multi-) level system which is tailored by a quantum interference. With cooling rates comparable to conventional sideband cooling, lower final temperatures may be achieved. The method was experimentally implemented to cool a single Ca$^+$ ion to its vibrational ground state. Since a broad band of vibrational frequencies can be cooled simultaneously, the technique will be particularly useful for the cooling of larger ion strings, thereby being of great practical importance for initializing a quantum register based on trapped ions. We also discuss its application to different level schemes and for ground state cooling of neutral atoms trapped by a far detuned standing wave laser field.

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F. Schmidt-Kaler, J. Eschner, G. Morigi, C. F. Roos, D. Leibfried, A. Mundt, R. Blatt. 2001-07-17. Laser cooling with electromagnetically induced transparency: Application to trapped samples of ions or neutral atoms. https://doi.org/10.1007/s003400100721

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