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arXiv · 1909.08894

Ground-State Cooling of a Single Atom in a High-Bandwidth Cavity

Eduardo Uruñuela·Wolfgang Alt·Elvira Keiler·Dieter Meschede·Deepak Pandey·Hannes Pfeifer·Tobias Macha
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Abstract

We report on vibrational ground-state cooling of a single neutral atom coupled to a high-bandwidth Fabry-Pérot cavity. The cooling process relies on degenerate Raman sideband transitions driven by dipole trap beams, which confine the atoms in three dimensions. We infer a one-dimensional motional ground state population close to $90~\%$ by means of Raman spectroscopy. Moreover, lifetime measurements of a cavity-coupled atom exceeding 40 s imply three-dimensional cooling of the atomic motion, which makes this resource-efficient technique particularly interesting for cavity experiments with limited optical access.

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Eduardo Uruñuela, Wolfgang Alt, Elvira Keiler, Dieter Meschede, Deepak Pandey, Hannes Pfeifer, Tobias Macha. 2019-09-19. Ground-State Cooling of a Single Atom in a High-Bandwidth Cavity. https://doi.org/10.1103/physreva.101.023415

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