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arXiv · 1112.6350

Double-path dark-state laser cooling in a three-level system

Javier Cerrillo·Alex Retzker·Martin B. Plenio
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Abstract

We present a detailed analysis of a robust and fast laser cooling scheme [J. Cerrillo et al.,Phys. Rev. Lett. 104, 043003 (2010)] on a three-level system. A special laser configuration, applicable to trapped ions, atoms, or cantilevers, designs a double-path quantum interference that eliminates the blue sideband in addition to the carrier transition, thus excluding any heating process involving up to one-phonon interactions. As a consequence, cooling achieves vanishing phonon occupation up to first order in the Lamb-Dicke parameter expansion. Underlying this scheme is a combined action of two cooling schemes which makes the proposal very flexible under constraints of the physical parameters such as laser intensity, detuning, or optical access, making it a viable candidate for experimental implementation. Furthermore, it is considerably faster than existing ground state cooling schemes. Its suitability as a cooling scheme for several ions in a trap and three-dimensional cooling is shown.

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Javier Cerrillo, Alex Retzker, Martin B. Plenio. 2011-12-29. Double-path dark-state laser cooling in a three-level system. https://doi.org/10.1103/physreva.98.013423

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