Single atoms in optical traps

Bergamini, S.; Darquie, B.; Browaeys, A. and Grangier, P. (2004). Single atoms in optical traps. Journal de Physique IV - Proceedings, 116 pp. 205–210.

DOI: https://doi.org/10.1051/jp4:2004116007

Abstract

We present a brief overview of optical trapping experiments of individual neutral atoms. Then we describe in more details an experiment using a very small optical dipole trap, that is designed to store and manipulate individual atoms. Due to the very small dipole trap volume, a "collisional blockade" mechanism locks the average number of trapped atoms on the value 0.5 over a large range of loading rates. We study this regime experimentally, and we describe methods to measure the oscillation frequencies and the temperature of a single atom in the trap with a high accuracy.

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