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Nano Positioning of Single Atoms in a Micro Cavity

Stefan Nussmann·Markus Hijlkema·Bernhard Weber·Felix Rohde·Gerhard Rempe·Axel Kuhn
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Abstract

The coupling of individual atoms to a high-finesse optical cavity is precisely controlled and adjusted using a standing-wave dipole-force trap, a challenge for strong atom-cavity coupling. Ultracold Rubidium atoms are first loaded into potential minima of the dipole trap in the center of the cavity. Then we use the trap as a conveyor belt that we set into motion perpendicular to the cavity axis. This allows us to repetitively move atoms out of and back into the cavity mode with a repositioning precision of 135 nm. This makes possible to either selectively address one atom of a string of atoms by the cavity, or to simultaneously couple two precisely separated atoms to a higher mode of the cavity.

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Stefan Nussmann, Markus Hijlkema, Bernhard Weber, Felix Rohde, Gerhard Rempe, Axel Kuhn. 2005-06-10. Nano Positioning of Single Atoms in a Micro Cavity. https://doi.org/10.1103/physrevlett.95.173602

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