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The phase shift induced by a single atom in free space

By M. Sondermann and G. Leuchs

Abstract

In this article we theoretically study the phase shift a single atom imprints onto a coherent state light beam in free space. The calculations are performed in a semiclassical framework. The key parameters governing the interaction and thus the measurable phase shift are the solid angle from which the light is focused onto the atom and the overlap of the incident radiation with the atomic dipole radiation pattern. The analysis includes saturation effects and discusses the associated Kerr-type non-linearity of a single atom

Year: 2013
DOI identifier: 10.2971/jeos.2013.13052
OAI identifier: oai:escidoc.org:escidoc:2370928
Provided by: MPG.PuRe
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