An optical conveyor belt for single neutral atoms

D Schrader, S Kuhr, W Alt, M Müller, V Gomer… - Applied Physics B, 2001 - Springer
D Schrader, S Kuhr, W Alt, M Müller, V Gomer, D Meschede
Applied Physics B, 2001Springer
Using optical dipole forces we have realized controlled transport of a single or any desired
small number of neutral atoms over a distance of a centimeter with sub-micrometer
precision. A standing wave dipole trap is loaded with a prescribed number of cesium atoms
from a magneto-optical trap. Mutual detuning of the counter-propagating laser beams moves
the interference pattern, allowing us to accelerate and stop the atoms at preselected points
along the standing wave. The transportation efficiency is close to 100%. This optical 'single …
Abstract
Using optical dipole forces we have realized controlled transport of a single or any desired small number of neutral atoms over a distance of a centimeter with sub-micrometer precision. A standing wave dipole trap is loaded with a prescribed number of cesium atoms from a magneto-optical trap. Mutual detuning of the counter-propagating laser beams moves the interference pattern, allowing us to accelerate and stop the atoms at preselected points along the standing wave. The transportation efficiency is close to 100%. This optical ‘single-atom conveyor belt’ represents a versatile tool for future experiments requiring deterministic delivery of a prescribed number of atoms on demand.
Springer
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